30528280

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{17749}}^1$

素因数の和:17803

約数の個数: 32

約数和(自身を含む): 70290000

約数和(自身を除く): 39761720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 17749, 35498, 70996, 88745, 141992, 177490, 354980, 709960, 763207, 1526414, 3052828, 3816035, 6105656, 7632070, 15264140, 30528280]

約数ペア:

[(1, 30528280), (2, 15264140), (4, 7632070), (5, 6105656), (8, 3816035), (10, 3052828), (20, 1526414), (40, 763207), (43, 709960), (86, 354980), (172, 177490), (215, 141992), (344, 88745), (430, 70996), (860, 35498), (1720, 17749)]