21570400

素因数分解:

$2^5\times 5^2\times {\mathrm{59}}^1\times {\mathrm{457}}^1$

素因数の和:536

約数の個数: 72

約数和(自身を含む): 53668440

約数和(自身を除く): 32098040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 59, 80, 100, 118, 160, 200, 236, 295, 400, 457, 472, 590, 800, 914, 944, 1180, 1475, 1828, 1888, 2285, 2360, 2950, 3656, 4570, 4720, 5900, 7312, 9140, 9440, 11425, 11800, 14624, 18280, 22850, 23600, 26963, 36560, 45700, 47200, 53926, 73120, 91400, 107852, 134815, 182800, 215704, 269630, 365600, 431408, 539260, 674075, 862816, 1078520, 1348150, 2157040, 2696300, 4314080, 5392600, 10785200, 21570400]

約数ペア:

[(1, 21570400), (2, 10785200), (4, 5392600), (5, 4314080), (8, 2696300), (10, 2157040), (16, 1348150), (20, 1078520), (25, 862816), (32, 674075), (40, 539260), (50, 431408), (59, 365600), (80, 269630), (100, 215704), (118, 182800), (160, 134815), (200, 107852), (236, 91400), (295, 73120), (400, 53926), (457, 47200), (472, 45700), (590, 36560), (800, 26963), (914, 23600), (944, 22850), (1180, 18280), (1475, 14624), (1828, 11800), (1888, 11425), (2285, 9440), (2360, 9140), (2950, 7312), (3656, 5900), (4570, 4720)]