20215171431

素因数分解:

$3^3\times 7^2\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{3931}}^1$

素因数の和:4003

約数の個数: 144

約数和(自身を含む): 39374104320

約数和(自身を除く): 19158932889

約数列:

[1, 3, 7, 9, 13, 21, 23, 27, 39, 49, 63, 69, 91, 117, 147, 161, 169, 189, 207, 273, 299, 351, 441, 483, 507, 621, 637, 819, 897, 1127, 1183, 1323, 1449, 1521, 1911, 2093, 2457, 2691, 3381, 3549, 3887, 3931, 4347, 4563, 5733, 6279, 8073, 8281, 10143, 10647, 11661, 11793, 14651, 17199, 18837, 24843, 27209, 27517, 30429, 31941, 34983, 35379, 43953, 51103, 56511, 74529, 81627, 82551, 90413, 104949, 106137, 131859, 153309, 190463, 192619, 223587, 244881, 247653, 271239, 357721, 395577, 459927, 571389, 577857, 632891, 664339, 734643, 742959, 813717, 1073163, 1175369, 1379781, 1714167, 1733571, 1898673, 1993017, 2441151, 2504047, 3219489, 3526107, 4430237, 4650373, 5142501, 5200713, 5696019, 5979051, 7512141, 8227583, 9658467, 10578321, 13290711, 13951119, 15279797, 17088057, 17937153, 22536423, 24682749, 31734963, 32552611, 39872133, 41853357, 45839391, 57593081, 67609269, 74048247, 97657833, 106958579, 119616399, 125560071, 137518173, 172779243, 222144741, 292973499, 320875737, 412554519, 518337729, 748710053, 878920497, 962627211, 1555013187, 2246130159, 2887881633, 6738390477, 20215171431]

約数ペア:

[(1, 20215171431), (3, 6738390477), (7, 2887881633), (9, 2246130159), (13, 1555013187), (21, 962627211), (23, 878920497), (27, 748710053), (39, 518337729), (49, 412554519), (63, 320875737), (69, 292973499), (91, 222144741), (117, 172779243), (147, 137518173), (161, 125560071), (169, 119616399), (189, 106958579), (207, 97657833), (273, 74048247), (299, 67609269), (351, 57593081), (441, 45839391), (483, 41853357), (507, 39872133), (621, 32552611), (637, 31734963), (819, 24682749), (897, 22536423), (1127, 17937153), (1183, 17088057), (1323, 15279797), (1449, 13951119), (1521, 13290711), (1911, 10578321), (2093, 9658467), (2457, 8227583), (2691, 7512141), (3381, 5979051), (3549, 5696019), (3887, 5200713), (3931, 5142501), (4347, 4650373), (4563, 4430237), (5733, 3526107), (6279, 3219489), (8073, 2504047), (8281, 2441151), (10143, 1993017), (10647, 1898673), (11661, 1733571), (11793, 1714167), (14651, 1379781), (17199, 1175369), (18837, 1073163), (24843, 813717), (27209, 742959), (27517, 734643), (30429, 664339), (31941, 632891), (34983, 577857), (35379, 571389), (43953, 459927), (51103, 395577), (56511, 357721), (74529, 271239), (81627, 247653), (82551, 244881), (90413, 223587), (104949, 192619), (106137, 190463), (131859, 153309)]