15998990

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{103}}^1\times {\mathrm{317}}^1$

素因数の和:441

約数の個数: 48

約数和(自身を含む): 33931872

約数和(自身を除く): 17932882

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 103, 206, 245, 317, 490, 515, 634, 721, 1030, 1442, 1585, 2219, 3170, 3605, 4438, 5047, 7210, 10094, 11095, 15533, 22190, 25235, 31066, 32651, 50470, 65302, 77665, 155330, 163255, 228557, 326510, 457114, 1142785, 1599899, 2285570, 3199798, 7999495, 15998990]

約数ペア:

[(1, 15998990), (2, 7999495), (5, 3199798), (7, 2285570), (10, 1599899), (14, 1142785), (35, 457114), (49, 326510), (70, 228557), (98, 163255), (103, 155330), (206, 77665), (245, 65302), (317, 50470), (490, 32651), (515, 31066), (634, 25235), (721, 22190), (1030, 15533), (1442, 11095), (1585, 10094), (2219, 7210), (3170, 5047), (3605, 4438)]