20161578500

素因数分解:

$2^2\times 5^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{185821}}^1$

素因数の和:185878

約数の個数: 96

約数和(自身を含む): 51946911744

約数和(自身を除く): 31785333244

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 31, 35, 50, 62, 70, 100, 124, 125, 140, 155, 175, 217, 250, 310, 350, 434, 500, 620, 700, 775, 868, 875, 1085, 1550, 1750, 2170, 3100, 3500, 3875, 4340, 5425, 7750, 10850, 15500, 21700, 27125, 54250, 108500, 185821, 371642, 743284, 929105, 1300747, 1858210, 2601494, 3716420, 4645525, 5202988, 5760451, 6503735, 9291050, 11520902, 13007470, 18582100, 23041804, 23227625, 26014940, 28802255, 32518675, 40323157, 46455250, 57604510, 65037350, 80646314, 92910500, 115209020, 130074700, 144011275, 161292628, 162593375, 201615785, 288022550, 325186750, 403231570, 576045100, 650373500, 720056375, 806463140, 1008078925, 1440112750, 2016157850, 2880225500, 4032315700, 5040394625, 10080789250, 20161578500]

約数ペア:

[(1, 20161578500), (2, 10080789250), (4, 5040394625), (5, 4032315700), (7, 2880225500), (10, 2016157850), (14, 1440112750), (20, 1008078925), (25, 806463140), (28, 720056375), (31, 650373500), (35, 576045100), (50, 403231570), (62, 325186750), (70, 288022550), (100, 201615785), (124, 162593375), (125, 161292628), (140, 144011275), (155, 130074700), (175, 115209020), (217, 92910500), (250, 80646314), (310, 65037350), (350, 57604510), (434, 46455250), (500, 40323157), (620, 32518675), (700, 28802255), (775, 26014940), (868, 23227625), (875, 23041804), (1085, 18582100), (1550, 13007470), (1750, 11520902), (2170, 9291050), (3100, 6503735), (3500, 5760451), (3875, 5202988), (4340, 4645525), (5425, 3716420), (7750, 2601494), (10850, 1858210), (15500, 1300747), (21700, 929105), (27125, 743284), (54250, 371642), (108500, 185821)]