19408025

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{449}}^1$

素因数の和:498

約数の個数: 48

約数和(自身を含む): 31248000

約数和(自身を除く): 11839975

約数列:

[1, 5, 7, 13, 19, 25, 35, 65, 91, 95, 133, 175, 247, 325, 449, 455, 475, 665, 1235, 1729, 2245, 2275, 3143, 3325, 5837, 6175, 8531, 8645, 11225, 15715, 29185, 40859, 42655, 43225, 59717, 78575, 110903, 145925, 204295, 213275, 298585, 554515, 776321, 1021475, 1492925, 2772575, 3881605, 19408025]

約数ペア:

[(1, 19408025), (5, 3881605), (7, 2772575), (13, 1492925), (19, 1021475), (25, 776321), (35, 554515), (65, 298585), (91, 213275), (95, 204295), (133, 145925), (175, 110903), (247, 78575), (325, 59717), (449, 43225), (455, 42655), (475, 40859), (665, 29185), (1235, 15715), (1729, 11225), (2245, 8645), (2275, 8531), (3143, 6175), (3325, 5837)]