87285140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{256721}}^1$

素因数の和:256747

約数の個数: 24

約数和(自身を含む): 194081832

約数和(自身を除く): 106796692

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 256721, 513442, 1026884, 1283605, 2567210, 4364257, 5134420, 8728514, 17457028, 21821285, 43642570, 87285140]

約数ペア:

[(1, 87285140), (2, 43642570), (4, 21821285), (5, 17457028), (10, 8728514), (17, 5134420), (20, 4364257), (34, 2567210), (68, 1283605), (85, 1026884), (170, 513442), (340, 256721)]