51396760

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1\times {\mathrm{229}}^1$

素因数の和:452

約数の個数: 64

約数和(自身を含む): 120556800

約数和(自身を除く): 69160040

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 181, 229, 248, 310, 362, 458, 620, 724, 905, 916, 1145, 1240, 1448, 1810, 1832, 2290, 3620, 4580, 5611, 7099, 7240, 9160, 11222, 14198, 22444, 28055, 28396, 35495, 41449, 44888, 56110, 56792, 70990, 82898, 112220, 141980, 165796, 207245, 224440, 283960, 331592, 414490, 828980, 1284919, 1657960, 2569838, 5139676, 6424595, 10279352, 12849190, 25698380, 51396760]

約数ペア:

[(1, 51396760), (2, 25698380), (4, 12849190), (5, 10279352), (8, 6424595), (10, 5139676), (20, 2569838), (31, 1657960), (40, 1284919), (62, 828980), (124, 414490), (155, 331592), (181, 283960), (229, 224440), (248, 207245), (310, 165796), (362, 141980), (458, 112220), (620, 82898), (724, 70990), (905, 56792), (916, 56110), (1145, 44888), (1240, 41449), (1448, 35495), (1810, 28396), (1832, 28055), (2290, 22444), (3620, 14198), (4580, 11222), (5611, 9160), (7099, 7240)]