777788125

素因数分解:

$5^4\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{887}}^1$

素因数の和:991

約数の個数: 40

約数和(自身を含む): 1031969664

約数和(自身を除く): 254181539

約数列:

[1, 5, 23, 25, 61, 115, 125, 305, 575, 625, 887, 1403, 1525, 2875, 4435, 7015, 7625, 14375, 20401, 22175, 35075, 38125, 54107, 102005, 110875, 175375, 270535, 510025, 554375, 876875, 1244461, 1352675, 2550125, 6222305, 6763375, 12750625, 31111525, 33816875, 155557625, 777788125]

約数ペア:

[(1, 777788125), (5, 155557625), (23, 33816875), (25, 31111525), (61, 12750625), (115, 6763375), (125, 6222305), (305, 2550125), (575, 1352675), (625, 1244461), (887, 876875), (1403, 554375), (1525, 510025), (2875, 270535), (4435, 175375), (7015, 110875), (7625, 102005), (14375, 54107), (20401, 38125), (22175, 35075)]