20528830075

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1$

素因数の和:437

約数の個数: 96

約数和(自身を含む): 28978145280

約数和(自身を除く): 8449315205

約数列:

[1, 5, 13, 25, 31, 65, 107, 137, 139, 155, 325, 403, 535, 685, 695, 775, 1391, 1781, 1807, 2015, 2675, 3317, 3425, 3475, 4247, 4309, 6955, 8905, 9035, 10075, 14659, 14873, 16585, 19043, 21235, 21545, 34775, 43121, 44525, 45175, 55211, 56017, 73295, 74365, 82925, 95215, 106175, 107725, 190567, 193349, 215605, 247559, 276055, 280085, 366475, 371825, 454429, 461063, 476075, 590333, 952835, 966745, 1078025, 1237795, 1380275, 1400425, 2037601, 2272145, 2305315, 2951665, 4764175, 4833725, 5907577, 5993819, 6188975, 7674329, 10188005, 11360725, 11526575, 14758325, 26488813, 29537885, 29969095, 38371645, 50940025, 63165631, 132444065, 147689425, 149845475, 191858225, 315828155, 662220325, 821153203, 1579140775, 4105766015, 20528830075]

約数ペア:

[(1, 20528830075), (5, 4105766015), (13, 1579140775), (25, 821153203), (31, 662220325), (65, 315828155), (107, 191858225), (137, 149845475), (139, 147689425), (155, 132444065), (325, 63165631), (403, 50940025), (535, 38371645), (685, 29969095), (695, 29537885), (775, 26488813), (1391, 14758325), (1781, 11526575), (1807, 11360725), (2015, 10188005), (2675, 7674329), (3317, 6188975), (3425, 5993819), (3475, 5907577), (4247, 4833725), (4309, 4764175), (6955, 2951665), (8905, 2305315), (9035, 2272145), (10075, 2037601), (14659, 1400425), (14873, 1380275), (16585, 1237795), (19043, 1078025), (21235, 966745), (21545, 952835), (34775, 590333), (43121, 476075), (44525, 461063), (45175, 454429), (55211, 371825), (56017, 366475), (73295, 280085), (74365, 276055), (82925, 247559), (95215, 215605), (106175, 193349), (107725, 190567)]