305225240

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{15541}}^1$

素因数の和:16043

約数の個数: 32

約数和(自身を含む): 688199760

約数和(自身を除く): 382974520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1964, 2455, 3928, 4910, 9820, 15541, 19640, 31082, 62164, 77705, 124328, 155410, 310820, 621640, 7630631, 15261262, 30522524, 38153155, 61045048, 76306310, 152612620, 305225240]

約数ペア:

[(1, 305225240), (2, 152612620), (4, 76306310), (5, 61045048), (8, 38153155), (10, 30522524), (20, 15261262), (40, 7630631), (491, 621640), (982, 310820), (1964, 155410), (2455, 124328), (3928, 77705), (4910, 62164), (9820, 31082), (15541, 19640)]