21512475

素因数分解:

$3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{4157}}^1$

素因数の和:4196

約数の個数: 36

約数和(自身を含む): 40216176

約数和(自身を除く): 18703701

約数列:

[1, 3, 5, 9, 15, 23, 25, 45, 69, 75, 115, 207, 225, 345, 575, 1035, 1725, 4157, 5175, 12471, 20785, 37413, 62355, 95611, 103925, 187065, 286833, 311775, 478055, 860499, 935325, 1434165, 2390275, 4302495, 7170825, 21512475]

約数ペア:

[(1, 21512475), (3, 7170825), (5, 4302495), (9, 2390275), (15, 1434165), (23, 935325), (25, 860499), (45, 478055), (69, 311775), (75, 286833), (115, 187065), (207, 103925), (225, 95611), (345, 62355), (575, 37413), (1035, 20785), (1725, 12471), (4157, 5175)]