19817375

素因数分解:

$5^3\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{113}}^1$

素因数の和:212

約数の個数: 32

約数和(自身を含む): 26462592

約数和(自身を除く): 6645217

約数列:

[1, 5, 23, 25, 61, 113, 115, 125, 305, 565, 575, 1403, 1525, 2599, 2825, 2875, 6893, 7015, 7625, 12995, 14125, 34465, 35075, 64975, 158539, 172325, 175375, 324875, 792695, 861625, 3963475, 19817375]

約数ペア:

[(1, 19817375), (5, 3963475), (23, 861625), (25, 792695), (61, 324875), (113, 175375), (115, 172325), (125, 158539), (305, 64975), (565, 35075), (575, 34465), (1403, 14125), (1525, 12995), (2599, 7625), (2825, 7015), (2875, 6893)]