81615625

素因数分解:

$5^5\times 7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1$

素因数の和:93

約数の個数: 72

約数和(自身を含む): 130913496

約数和(自身を除く): 49297871

約数列:

[1, 5, 7, 13, 25, 35, 41, 49, 65, 91, 125, 175, 205, 245, 287, 325, 455, 533, 625, 637, 875, 1025, 1225, 1435, 1625, 2009, 2275, 2665, 3125, 3185, 3731, 4375, 5125, 6125, 7175, 8125, 10045, 11375, 13325, 15925, 18655, 21875, 25625, 26117, 30625, 35875, 40625, 50225, 56875, 66625, 79625, 93275, 128125, 130585, 153125, 179375, 251125, 284375, 333125, 398125, 466375, 652925, 896875, 1255625, 1665625, 1990625, 2331875, 3264625, 6278125, 11659375, 16323125, 81615625]

約数ペア:

[(1, 81615625), (5, 16323125), (7, 11659375), (13, 6278125), (25, 3264625), (35, 2331875), (41, 1990625), (49, 1665625), (65, 1255625), (91, 896875), (125, 652925), (175, 466375), (205, 398125), (245, 333125), (287, 284375), (325, 251125), (455, 179375), (533, 153125), (625, 130585), (637, 128125), (875, 93275), (1025, 79625), (1225, 66625), (1435, 56875), (1625, 50225), (2009, 40625), (2275, 35875), (2665, 30625), (3125, 26117), (3185, 25625), (3731, 21875), (4375, 18655), (5125, 15925), (6125, 13325), (7175, 11375), (8125, 10045)]