21450375

素因数分解:

$3^2\times 5^3\times {\mathrm{23}}^1\times {\mathrm{829}}^1$

素因数の和:873

約数の個数: 48

約数和(自身を含む): 40397760

約数和(自身を除く): 18947385

約数列:

[1, 3, 5, 9, 15, 23, 25, 45, 69, 75, 115, 125, 207, 225, 345, 375, 575, 829, 1035, 1125, 1725, 2487, 2875, 4145, 5175, 7461, 8625, 12435, 19067, 20725, 25875, 37305, 57201, 62175, 95335, 103625, 171603, 186525, 286005, 310875, 476675, 858015, 932625, 1430025, 2383375, 4290075, 7150125, 21450375]

約数ペア:

[(1, 21450375), (3, 7150125), (5, 4290075), (9, 2383375), (15, 1430025), (23, 932625), (25, 858015), (45, 476675), (69, 310875), (75, 286005), (115, 186525), (125, 171603), (207, 103625), (225, 95335), (345, 62175), (375, 57201), (575, 37305), (829, 25875), (1035, 20725), (1125, 19067), (1725, 12435), (2487, 8625), (2875, 7461), (4145, 5175)]