18836125

素因数分解:

$5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1$

素因数の和:155

約数の個数: 64

約数和(自身を含む): 31150080

約数和(自身を除く): 12313955

約数列:

[1, 5, 7, 11, 19, 25, 35, 55, 77, 95, 103, 125, 133, 175, 209, 275, 385, 475, 515, 665, 721, 875, 1045, 1133, 1375, 1463, 1925, 1957, 2375, 2575, 3325, 3605, 5225, 5665, 7315, 7931, 9625, 9785, 12875, 13699, 16625, 18025, 21527, 26125, 28325, 36575, 39655, 48925, 68495, 90125, 107635, 141625, 150689, 182875, 198275, 244625, 342475, 538175, 753445, 991375, 1712375, 2690875, 3767225, 18836125]

約数ペア:

[(1, 18836125), (5, 3767225), (7, 2690875), (11, 1712375), (19, 991375), (25, 753445), (35, 538175), (55, 342475), (77, 244625), (95, 198275), (103, 182875), (125, 150689), (133, 141625), (175, 107635), (209, 90125), (275, 68495), (385, 48925), (475, 39655), (515, 36575), (665, 28325), (721, 26125), (875, 21527), (1045, 18025), (1133, 16625), (1375, 13699), (1463, 12875), (1925, 9785), (1957, 9625), (2375, 7931), (2575, 7315), (3325, 5665), (3605, 5225)]