78203125

素因数分解:

$5^7\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1$

素因数の和:66

約数の個数: 64

約数和(自身を含む): 131249664

約数和(自身を除く): 53046539

約数列:

[1, 5, 7, 11, 13, 25, 35, 55, 65, 77, 91, 125, 143, 175, 275, 325, 385, 455, 625, 715, 875, 1001, 1375, 1625, 1925, 2275, 3125, 3575, 4375, 5005, 6875, 8125, 9625, 11375, 15625, 17875, 21875, 25025, 34375, 40625, 48125, 56875, 78125, 89375, 109375, 125125, 171875, 203125, 240625, 284375, 446875, 546875, 625625, 859375, 1015625, 1203125, 1421875, 2234375, 3128125, 6015625, 7109375, 11171875, 15640625, 78203125]

約数ペア:

[(1, 78203125), (5, 15640625), (7, 11171875), (11, 7109375), (13, 6015625), (25, 3128125), (35, 2234375), (55, 1421875), (65, 1203125), (77, 1015625), (91, 859375), (125, 625625), (143, 546875), (175, 446875), (275, 284375), (325, 240625), (385, 203125), (455, 171875), (625, 125125), (715, 109375), (875, 89375), (1001, 78125), (1375, 56875), (1625, 48125), (1925, 40625), (2275, 34375), (3125, 25025), (3575, 21875), (4375, 17875), (5005, 15625), (6875, 11375), (8125, 9625)]