20931210

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{25841}}^1$

素因数の和:25860

約数の個数: 40

約数和(自身を含む): 56283876

約数和(自身を除く): 35352666

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 270, 405, 810, 25841, 51682, 77523, 129205, 155046, 232569, 258410, 387615, 465138, 697707, 775230, 1162845, 1395414, 2093121, 2325690, 3488535, 4186242, 6977070, 10465605, 20931210]

約数ペア:

[(1, 20931210), (2, 10465605), (3, 6977070), (5, 4186242), (6, 3488535), (9, 2325690), (10, 2093121), (15, 1395414), (18, 1162845), (27, 775230), (30, 697707), (45, 465138), (54, 387615), (81, 258410), (90, 232569), (135, 155046), (162, 129205), (270, 77523), (405, 51682), (810, 25841)]