21666840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1$

素因数の和:106

約数の個数: 256

約数和(自身を含む): 79833600

約数和(自身を除く): 58166760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 17, 19, 20, 24, 26, 30, 34, 38, 39, 40, 43, 51, 52, 57, 60, 65, 68, 76, 78, 85, 86, 95, 102, 104, 114, 120, 129, 130, 136, 152, 156, 170, 172, 190, 195, 204, 215, 221, 228, 247, 255, 258, 260, 285, 312, 323, 340, 344, 380, 390, 408, 430, 442, 456, 494, 510, 516, 520, 559, 570, 645, 646, 663, 680, 731, 741, 760, 780, 817, 860, 884, 969, 988, 1020, 1032, 1105, 1118, 1140, 1235, 1290, 1292, 1326, 1462, 1482, 1560, 1615, 1634, 1677, 1720, 1768, 1938, 1976, 2040, 2193, 2210, 2236, 2280, 2451, 2470, 2580, 2584, 2652, 2795, 2924, 2964, 3230, 3268, 3315, 3354, 3655, 3705, 3876, 4085, 4199, 4386, 4420, 4472, 4845, 4902, 4940, 5160, 5304, 5590, 5848, 5928, 6460, 6536, 6630, 6708, 7310, 7410, 7752, 8170, 8385, 8398, 8772, 8840, 9503, 9690, 9804, 9880, 10621, 10965, 11180, 12255, 12597, 12920, 13260, 13416, 13889, 14620, 14820, 16340, 16770, 16796, 17544, 19006, 19380, 19608, 20995, 21242, 21930, 22360, 24510, 25194, 26520, 27778, 28509, 29240, 29640, 31863, 32680, 33540, 33592, 38012, 38760, 41667, 41990, 42484, 43860, 47515, 49020, 50388, 53105, 55556, 57018, 62985, 63726, 67080, 69445, 76024, 83334, 83980, 84968, 87720, 95030, 98040, 100776, 106210, 111112, 114036, 125970, 127452, 138890, 142545, 159315, 166668, 167960, 180557, 190060, 208335, 212420, 228072, 251940, 254904, 277780, 285090, 318630, 333336, 361114, 380120, 416670, 424840, 503880, 541671, 555560, 570180, 637260, 722228, 833340, 902785, 1083342, 1140360, 1274520, 1444456, 1666680, 1805570, 2166684, 2708355, 3611140, 4333368, 5416710, 7222280, 10833420, 21666840]

約数ペア:

[(1, 21666840), (2, 10833420), (3, 7222280), (4, 5416710), (5, 4333368), (6, 3611140), (8, 2708355), (10, 2166684), (12, 1805570), (13, 1666680), (15, 1444456), (17, 1274520), (19, 1140360), (20, 1083342), (24, 902785), (26, 833340), (30, 722228), (34, 637260), (38, 570180), (39, 555560), (40, 541671), (43, 503880), (51, 424840), (52, 416670), (57, 380120), (60, 361114), (65, 333336), (68, 318630), (76, 285090), (78, 277780), (85, 254904), (86, 251940), (95, 228072), (102, 212420), (104, 208335), (114, 190060), (120, 180557), (129, 167960), (130, 166668), (136, 159315), (152, 142545), (156, 138890), (170, 127452), (172, 125970), (190, 114036), (195, 111112), (204, 106210), (215, 100776), (221, 98040), (228, 95030), (247, 87720), (255, 84968), (258, 83980), (260, 83334), (285, 76024), (312, 69445), (323, 67080), (340, 63726), (344, 62985), (380, 57018), (390, 55556), (408, 53105), (430, 50388), (442, 49020), (456, 47515), (494, 43860), (510, 42484), (516, 41990), (520, 41667), (559, 38760), (570, 38012), (645, 33592), (646, 33540), (663, 32680), (680, 31863), (731, 29640), (741, 29240), (760, 28509), (780, 27778), (817, 26520), (860, 25194), (884, 24510), (969, 22360), (988, 21930), (1020, 21242), (1032, 20995), (1105, 19608), (1118, 19380), (1140, 19006), (1235, 17544), (1290, 16796), (1292, 16770), (1326, 16340), (1462, 14820), (1482, 14620), (1560, 13889), (1615, 13416), (1634, 13260), (1677, 12920), (1720, 12597), (1768, 12255), (1938, 11180), (1976, 10965), (2040, 10621), (2193, 9880), (2210, 9804), (2236, 9690), (2280, 9503), (2451, 8840), (2470, 8772), (2580, 8398), (2584, 8385), (2652, 8170), (2795, 7752), (2924, 7410), (2964, 7310), (3230, 6708), (3268, 6630), (3315, 6536), (3354, 6460), (3655, 5928), (3705, 5848), (3876, 5590), (4085, 5304), (4199, 5160), (4386, 4940), (4420, 4902), (4472, 4845)]