28132480

素因数分解:

$2^7\times 5^1\times {\mathrm{113}}^1\times {\mathrm{389}}^1$

素因数の和:521

約数の個数: 64

約数和(自身を含む): 68023800

約数和(自身を除く): 39891320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 113, 128, 160, 226, 320, 389, 452, 565, 640, 778, 904, 1130, 1556, 1808, 1945, 2260, 3112, 3616, 3890, 4520, 6224, 7232, 7780, 9040, 12448, 14464, 15560, 18080, 24896, 31120, 36160, 43957, 49792, 62240, 72320, 87914, 124480, 175828, 219785, 248960, 351656, 439570, 703312, 879140, 1406624, 1758280, 2813248, 3516560, 5626496, 7033120, 14066240, 28132480]

約数ペア:

[(1, 28132480), (2, 14066240), (4, 7033120), (5, 5626496), (8, 3516560), (10, 2813248), (16, 1758280), (20, 1406624), (32, 879140), (40, 703312), (64, 439570), (80, 351656), (113, 248960), (128, 219785), (160, 175828), (226, 124480), (320, 87914), (389, 72320), (452, 62240), (565, 49792), (640, 43957), (778, 36160), (904, 31120), (1130, 24896), (1556, 18080), (1808, 15560), (1945, 14464), (2260, 12448), (3112, 9040), (3616, 7780), (3890, 7232), (4520, 6224)]