21563775

素因数分解:

$3^2\times 5^2\times {\mathrm{239}}^1\times {\mathrm{401}}^1$

素因数の和:656

約数の個数: 36

約数和(自身を含む): 38881440

約数和(自身を除く): 17317665

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 239, 401, 717, 1195, 1203, 2005, 2151, 3585, 3609, 5975, 6015, 10025, 10755, 17925, 18045, 30075, 53775, 90225, 95839, 287517, 479195, 862551, 1437585, 2395975, 4312755, 7187925, 21563775]

約数ペア:

[(1, 21563775), (3, 7187925), (5, 4312755), (9, 2395975), (15, 1437585), (25, 862551), (45, 479195), (75, 287517), (225, 95839), (239, 90225), (401, 53775), (717, 30075), (1195, 18045), (1203, 17925), (2005, 10755), (2151, 10025), (3585, 6015), (3609, 5975)]