18980493875

素因数分解:

$5^3\times 7^1\times {\mathrm{41}}^1\times {\mathrm{317}}^1\times {\mathrm{1669}}^1$

素因数の和:2049

約数の個数: 64

約数和(自身を含む): 27836040960

約数和(自身を除く): 8855547085

約数列:

[1, 5, 7, 25, 35, 41, 125, 175, 205, 287, 317, 875, 1025, 1435, 1585, 1669, 2219, 5125, 7175, 7925, 8345, 11095, 11683, 12997, 35875, 39625, 41725, 55475, 58415, 64985, 68429, 90979, 208625, 277375, 292075, 324925, 342145, 454895, 479003, 529073, 1460375, 1624625, 1710725, 2274475, 2395015, 2645365, 3703511, 8553625, 11372375, 11975075, 13226825, 18517555, 21691993, 59875375, 66134125, 92587775, 108459965, 151843951, 462938875, 542299825, 759219755, 2711499125, 3796098775, 18980493875]

約数ペア:

[(1, 18980493875), (5, 3796098775), (7, 2711499125), (25, 759219755), (35, 542299825), (41, 462938875), (125, 151843951), (175, 108459965), (205, 92587775), (287, 66134125), (317, 59875375), (875, 21691993), (1025, 18517555), (1435, 13226825), (1585, 11975075), (1669, 11372375), (2219, 8553625), (5125, 3703511), (7175, 2645365), (7925, 2395015), (8345, 2274475), (11095, 1710725), (11683, 1624625), (12997, 1460375), (35875, 529073), (39625, 479003), (41725, 454895), (55475, 342145), (58415, 324925), (64985, 292075), (68429, 277375), (90979, 208625)]