20448561

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{311}}^1$

素因数の和:453

約数の個数: 32

約数和(自身を含む): 32587776

約数和(自身を除く): 12139215

約数列:

[1, 3, 7, 21, 31, 93, 101, 217, 303, 311, 651, 707, 933, 2121, 2177, 3131, 6531, 9393, 9641, 21917, 28923, 31411, 65751, 67487, 94233, 202461, 219877, 659631, 973741, 2921223, 6816187, 20448561]

約数ペア:

[(1, 20448561), (3, 6816187), (7, 2921223), (21, 973741), (31, 659631), (93, 219877), (101, 202461), (217, 94233), (303, 67487), (311, 65751), (651, 31411), (707, 28923), (933, 21917), (2121, 9641), (2177, 9393), (3131, 6531)]