21660900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{103}}^1\times {\mathrm{701}}^1$

素因数の和:821

約数の個数: 72

約数和(自身を含む): 63370944

約数和(自身を除く): 41710044

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 103, 150, 206, 300, 309, 412, 515, 618, 701, 1030, 1236, 1402, 1545, 2060, 2103, 2575, 2804, 3090, 3505, 4206, 5150, 6180, 7010, 7725, 8412, 10300, 10515, 14020, 15450, 17525, 21030, 30900, 35050, 42060, 52575, 70100, 72203, 105150, 144406, 210300, 216609, 288812, 361015, 433218, 722030, 866436, 1083045, 1444060, 1805075, 2166090, 3610150, 4332180, 5415225, 7220300, 10830450, 21660900]

約数ペア:

[(1, 21660900), (2, 10830450), (3, 7220300), (4, 5415225), (5, 4332180), (6, 3610150), (10, 2166090), (12, 1805075), (15, 1444060), (20, 1083045), (25, 866436), (30, 722030), (50, 433218), (60, 361015), (75, 288812), (100, 216609), (103, 210300), (150, 144406), (206, 105150), (300, 72203), (309, 70100), (412, 52575), (515, 42060), (618, 35050), (701, 30900), (1030, 21030), (1236, 17525), (1402, 15450), (1545, 14020), (2060, 10515), (2103, 10300), (2575, 8412), (2804, 7725), (3090, 7010), (3505, 6180), (4206, 5150)]