20758920

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1901}}^1$

素因数の和:1935

約数の個数: 128

約数和(自身を含む): 76688640

約数和(自身を除く): 55929720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 52, 56, 60, 65, 70, 78, 84, 91, 104, 105, 120, 130, 140, 156, 168, 182, 195, 210, 260, 273, 280, 312, 364, 390, 420, 455, 520, 546, 728, 780, 840, 910, 1092, 1365, 1560, 1820, 1901, 2184, 2730, 3640, 3802, 5460, 5703, 7604, 9505, 10920, 11406, 13307, 15208, 19010, 22812, 24713, 26614, 28515, 38020, 39921, 45624, 49426, 53228, 57030, 66535, 74139, 76040, 79842, 98852, 106456, 114060, 123565, 133070, 148278, 159684, 172991, 197704, 199605, 228120, 247130, 266140, 296556, 319368, 345982, 370695, 399210, 494260, 518973, 532280, 593112, 691964, 741390, 798420, 864955, 988520, 1037946, 1383928, 1482780, 1596840, 1729910, 2075892, 2594865, 2965560, 3459820, 4151784, 5189730, 6919640, 10379460, 20758920]

約数ペア:

[(1, 20758920), (2, 10379460), (3, 6919640), (4, 5189730), (5, 4151784), (6, 3459820), (7, 2965560), (8, 2594865), (10, 2075892), (12, 1729910), (13, 1596840), (14, 1482780), (15, 1383928), (20, 1037946), (21, 988520), (24, 864955), (26, 798420), (28, 741390), (30, 691964), (35, 593112), (39, 532280), (40, 518973), (42, 494260), (52, 399210), (56, 370695), (60, 345982), (65, 319368), (70, 296556), (78, 266140), (84, 247130), (91, 228120), (104, 199605), (105, 197704), (120, 172991), (130, 159684), (140, 148278), (156, 133070), (168, 123565), (182, 114060), (195, 106456), (210, 98852), (260, 79842), (273, 76040), (280, 74139), (312, 66535), (364, 57030), (390, 53228), (420, 49426), (455, 45624), (520, 39921), (546, 38020), (728, 28515), (780, 26614), (840, 24713), (910, 22812), (1092, 19010), (1365, 15208), (1560, 13307), (1820, 11406), (1901, 10920), (2184, 9505), (2730, 7604), (3640, 5703), (3802, 5460)]