20787858

素因数分解:

$2^1\times 3^2\times 7^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1$

素因数の和:86

約数の個数: 120

約数和(自身を含む): 58115148

約数和(自身を除く): 37327290

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 37, 39, 42, 49, 63, 74, 78, 91, 98, 111, 117, 126, 147, 182, 222, 234, 259, 273, 294, 333, 343, 441, 481, 518, 546, 637, 666, 686, 777, 819, 882, 962, 1029, 1274, 1443, 1554, 1638, 1813, 1911, 2058, 2331, 2401, 2886, 3087, 3367, 3626, 3822, 4329, 4459, 4662, 4802, 5439, 5733, 6174, 6734, 7203, 8658, 8918, 10101, 10878, 11466, 12691, 13377, 14406, 16317, 20202, 21609, 23569, 25382, 26754, 30303, 31213, 32634, 38073, 40131, 43218, 47138, 60606, 62426, 70707, 76146, 80262, 88837, 93639, 114219, 141414, 164983, 177674, 187278, 212121, 228438, 266511, 280917, 329966, 424242, 494949, 533022, 561834, 799533, 989898, 1154881, 1484847, 1599066, 2309762, 2969694, 3464643, 6929286, 10393929, 20787858]

約数ペア:

[(1, 20787858), (2, 10393929), (3, 6929286), (6, 3464643), (7, 2969694), (9, 2309762), (13, 1599066), (14, 1484847), (18, 1154881), (21, 989898), (26, 799533), (37, 561834), (39, 533022), (42, 494949), (49, 424242), (63, 329966), (74, 280917), (78, 266511), (91, 228438), (98, 212121), (111, 187278), (117, 177674), (126, 164983), (147, 141414), (182, 114219), (222, 93639), (234, 88837), (259, 80262), (273, 76146), (294, 70707), (333, 62426), (343, 60606), (441, 47138), (481, 43218), (518, 40131), (546, 38073), (637, 32634), (666, 31213), (686, 30303), (777, 26754), (819, 25382), (882, 23569), (962, 21609), (1029, 20202), (1274, 16317), (1443, 14406), (1554, 13377), (1638, 12691), (1813, 11466), (1911, 10878), (2058, 10101), (2331, 8918), (2401, 8658), (2886, 7203), (3087, 6734), (3367, 6174), (3626, 5733), (3822, 5439), (4329, 4802), (4459, 4662)]