20973680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:143

約数の個数: 160

約数和(自身を含む): 62329344

約数和(自身を除く): 41355664

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 43, 52, 56, 65, 67, 70, 80, 86, 91, 104, 112, 130, 134, 140, 172, 182, 208, 215, 260, 268, 280, 301, 335, 344, 364, 430, 455, 469, 520, 536, 559, 560, 602, 670, 688, 728, 860, 871, 910, 938, 1040, 1072, 1118, 1204, 1340, 1456, 1505, 1720, 1742, 1820, 1876, 2236, 2345, 2408, 2680, 2795, 2881, 3010, 3440, 3484, 3640, 3752, 3913, 4355, 4472, 4690, 4816, 5360, 5590, 5762, 6020, 6097, 6968, 7280, 7504, 7826, 8710, 8944, 9380, 11180, 11524, 12040, 12194, 13936, 14405, 15652, 17420, 18760, 19565, 20167, 22360, 23048, 24080, 24388, 28810, 30485, 31304, 34840, 37453, 37520, 39130, 40334, 44720, 46096, 48776, 57620, 60970, 62608, 69680, 74906, 78260, 80668, 97552, 100835, 115240, 121940, 149812, 156520, 161336, 187265, 201670, 230480, 243880, 262171, 299624, 313040, 322672, 374530, 403340, 487760, 524342, 599248, 749060, 806680, 1048684, 1310855, 1498120, 1613360, 2097368, 2621710, 2996240, 4194736, 5243420, 10486840, 20973680]

約数ペア:

[(1, 20973680), (2, 10486840), (4, 5243420), (5, 4194736), (7, 2996240), (8, 2621710), (10, 2097368), (13, 1613360), (14, 1498120), (16, 1310855), (20, 1048684), (26, 806680), (28, 749060), (35, 599248), (40, 524342), (43, 487760), (52, 403340), (56, 374530), (65, 322672), (67, 313040), (70, 299624), (80, 262171), (86, 243880), (91, 230480), (104, 201670), (112, 187265), (130, 161336), (134, 156520), (140, 149812), (172, 121940), (182, 115240), (208, 100835), (215, 97552), (260, 80668), (268, 78260), (280, 74906), (301, 69680), (335, 62608), (344, 60970), (364, 57620), (430, 48776), (455, 46096), (469, 44720), (520, 40334), (536, 39130), (559, 37520), (560, 37453), (602, 34840), (670, 31304), (688, 30485), (728, 28810), (860, 24388), (871, 24080), (910, 23048), (938, 22360), (1040, 20167), (1072, 19565), (1118, 18760), (1204, 17420), (1340, 15652), (1456, 14405), (1505, 13936), (1720, 12194), (1742, 12040), (1820, 11524), (1876, 11180), (2236, 9380), (2345, 8944), (2408, 8710), (2680, 7826), (2795, 7504), (2881, 7280), (3010, 6968), (3440, 6097), (3484, 6020), (3640, 5762), (3752, 5590), (3913, 5360), (4355, 4816), (4472, 4690)]