20748790

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{661}}^1$

素因数の和:784

約数の個数: 32

約数和(自身を含む): 38798496

約数和(自身を除く): 18049706

約数列:

[1, 2, 5, 10, 43, 73, 86, 146, 215, 365, 430, 661, 730, 1322, 3139, 3305, 6278, 6610, 15695, 28423, 31390, 48253, 56846, 96506, 142115, 241265, 284230, 482530, 2074879, 4149758, 10374395, 20748790]

約数ペア:

[(1, 20748790), (2, 10374395), (5, 4149758), (10, 2074879), (43, 482530), (73, 284230), (86, 241265), (146, 142115), (215, 96506), (365, 56846), (430, 48253), (661, 31390), (730, 28423), (1322, 15695), (3139, 6610), (3305, 6278)]