199712500

素因数分解:

$2^2\times 5^5\times {\mathrm{13}}^1\times {\mathrm{1229}}^1$

素因数の和:1271

約数の個数: 72

約数和(自身を含む): 470829240

約数和(自身を除く): 271116740

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 625, 650, 1229, 1250, 1300, 1625, 2458, 2500, 3125, 3250, 4916, 6145, 6250, 6500, 8125, 12290, 12500, 15977, 16250, 24580, 30725, 31954, 32500, 40625, 61450, 63908, 79885, 81250, 122900, 153625, 159770, 162500, 307250, 319540, 399425, 614500, 768125, 798850, 1536250, 1597700, 1997125, 3072500, 3840625, 3994250, 7681250, 7988500, 9985625, 15362500, 19971250, 39942500, 49928125, 99856250, 199712500]

約数ペア:

[(1, 199712500), (2, 99856250), (4, 49928125), (5, 39942500), (10, 19971250), (13, 15362500), (20, 9985625), (25, 7988500), (26, 7681250), (50, 3994250), (52, 3840625), (65, 3072500), (100, 1997125), (125, 1597700), (130, 1536250), (250, 798850), (260, 768125), (325, 614500), (500, 399425), (625, 319540), (650, 307250), (1229, 162500), (1250, 159770), (1300, 153625), (1625, 122900), (2458, 81250), (2500, 79885), (3125, 63908), (3250, 61450), (4916, 40625), (6145, 32500), (6250, 31954), (6500, 30725), (8125, 24580), (12290, 16250), (12500, 15977)]