20991030

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{22571}}^1$

素因数の和:22612

約数の個数: 32

約数和(自身を含む): 52005888

約数和(自身を除く): 31014858

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 62, 93, 155, 186, 310, 465, 930, 22571, 45142, 67713, 112855, 135426, 225710, 338565, 677130, 699701, 1399402, 2099103, 3498505, 4198206, 6997010, 10495515, 20991030]

約数ペア:

[(1, 20991030), (2, 10495515), (3, 6997010), (5, 4198206), (6, 3498505), (10, 2099103), (15, 1399402), (30, 699701), (31, 677130), (62, 338565), (93, 225710), (155, 135426), (186, 112855), (310, 67713), (465, 45142), (930, 22571)]