20449620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{1103}}^1$

素因数の和:1221

約数の個数: 72

約数和(自身を含む): 62689536

約数和(自身を除く): 42239916

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 103, 180, 206, 309, 412, 515, 618, 927, 1030, 1103, 1236, 1545, 1854, 2060, 2206, 3090, 3309, 3708, 4412, 4635, 5515, 6180, 6618, 9270, 9927, 11030, 13236, 16545, 18540, 19854, 22060, 33090, 39708, 49635, 66180, 99270, 113609, 198540, 227218, 340827, 454436, 568045, 681654, 1022481, 1136090, 1363308, 1704135, 2044962, 2272180, 3408270, 4089924, 5112405, 6816540, 10224810, 20449620]

約数ペア:

[(1, 20449620), (2, 10224810), (3, 6816540), (4, 5112405), (5, 4089924), (6, 3408270), (9, 2272180), (10, 2044962), (12, 1704135), (15, 1363308), (18, 1136090), (20, 1022481), (30, 681654), (36, 568045), (45, 454436), (60, 340827), (90, 227218), (103, 198540), (180, 113609), (206, 99270), (309, 66180), (412, 49635), (515, 39708), (618, 33090), (927, 22060), (1030, 19854), (1103, 18540), (1236, 16545), (1545, 13236), (1854, 11030), (2060, 9927), (2206, 9270), (3090, 6618), (3309, 6180), (3708, 5515), (4412, 4635)]