21303200

素因数分解:

$2^5\times 5^2\times {\mathrm{31}}^1\times {\mathrm{859}}^1$

素因数の和:910

約数の個数: 72

約数和(自身を含む): 53746560

約数和(自身を除く): 32443360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 80, 100, 124, 155, 160, 200, 248, 310, 400, 496, 620, 775, 800, 859, 992, 1240, 1550, 1718, 2480, 3100, 3436, 4295, 4960, 6200, 6872, 8590, 12400, 13744, 17180, 21475, 24800, 26629, 27488, 34360, 42950, 53258, 68720, 85900, 106516, 133145, 137440, 171800, 213032, 266290, 343600, 426064, 532580, 665725, 687200, 852128, 1065160, 1331450, 2130320, 2662900, 4260640, 5325800, 10651600, 21303200]

約数ペア:

[(1, 21303200), (2, 10651600), (4, 5325800), (5, 4260640), (8, 2662900), (10, 2130320), (16, 1331450), (20, 1065160), (25, 852128), (31, 687200), (32, 665725), (40, 532580), (50, 426064), (62, 343600), (80, 266290), (100, 213032), (124, 171800), (155, 137440), (160, 133145), (200, 106516), (248, 85900), (310, 68720), (400, 53258), (496, 42950), (620, 34360), (775, 27488), (800, 26629), (859, 24800), (992, 21475), (1240, 17180), (1550, 13744), (1718, 12400), (2480, 8590), (3100, 6872), (3436, 6200), (4295, 4960)]