21605600

素因数分解:

$2^5\times 5^2\times {\mathrm{113}}^1\times {\mathrm{239}}^1$

素因数の和:372

約数の個数: 72

約数和(自身を含む): 53434080

約数和(自身を除く): 31828480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 113, 160, 200, 226, 239, 400, 452, 478, 565, 800, 904, 956, 1130, 1195, 1808, 1912, 2260, 2390, 2825, 3616, 3824, 4520, 4780, 5650, 5975, 7648, 9040, 9560, 11300, 11950, 18080, 19120, 22600, 23900, 27007, 38240, 45200, 47800, 54014, 90400, 95600, 108028, 135035, 191200, 216056, 270070, 432112, 540140, 675175, 864224, 1080280, 1350350, 2160560, 2700700, 4321120, 5401400, 10802800, 21605600]

約数ペア:

[(1, 21605600), (2, 10802800), (4, 5401400), (5, 4321120), (8, 2700700), (10, 2160560), (16, 1350350), (20, 1080280), (25, 864224), (32, 675175), (40, 540140), (50, 432112), (80, 270070), (100, 216056), (113, 191200), (160, 135035), (200, 108028), (226, 95600), (239, 90400), (400, 54014), (452, 47800), (478, 45200), (565, 38240), (800, 27007), (904, 23900), (956, 22600), (1130, 19120), (1195, 18080), (1808, 11950), (1912, 11300), (2260, 9560), (2390, 9040), (2825, 7648), (3616, 5975), (3824, 5650), (4520, 4780)]