218122020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{1211789}}^1$

素因数の和:1211804

約数の個数: 36

約数和(自身を含む): 661637340

約数和(自身を除く): 443515320

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 1211789, 2423578, 3635367, 4847156, 6058945, 7270734, 10906101, 12117890, 14541468, 18176835, 21812202, 24235780, 36353670, 43624404, 54530505, 72707340, 109061010, 218122020]

約数ペア:

[(1, 218122020), (2, 109061010), (3, 72707340), (4, 54530505), (5, 43624404), (6, 36353670), (9, 24235780), (10, 21812202), (12, 18176835), (15, 14541468), (18, 12117890), (20, 10906101), (30, 7270734), (36, 6058945), (45, 4847156), (60, 3635367), (90, 2423578), (180, 1211789)]