20187375

素因数分解:

$3^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1$

素因数の和:173

約数の個数: 64

約数和(自身を含む): 37425024

約数和(自身を除く): 17237649

約数列:

[1, 3, 5, 13, 15, 25, 39, 41, 65, 75, 101, 123, 125, 195, 205, 303, 325, 375, 505, 533, 615, 975, 1025, 1313, 1515, 1599, 1625, 2525, 2665, 3075, 3939, 4141, 4875, 5125, 6565, 7575, 7995, 12423, 12625, 13325, 15375, 19695, 20705, 32825, 37875, 39975, 53833, 62115, 66625, 98475, 103525, 161499, 164125, 199875, 269165, 310575, 492375, 517625, 807495, 1345825, 1552875, 4037475, 6729125, 20187375]

約数ペア:

[(1, 20187375), (3, 6729125), (5, 4037475), (13, 1552875), (15, 1345825), (25, 807495), (39, 517625), (41, 492375), (65, 310575), (75, 269165), (101, 199875), (123, 164125), (125, 161499), (195, 103525), (205, 98475), (303, 66625), (325, 62115), (375, 53833), (505, 39975), (533, 37875), (615, 32825), (975, 20705), (1025, 19695), (1313, 15375), (1515, 13325), (1599, 12625), (1625, 12423), (2525, 7995), (2665, 7575), (3075, 6565), (3939, 5125), (4141, 4875)]