28361775

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1531}}^1$

素因数の和:1576

約数の個数: 48

約数和(自身を含む): 53191040

約数和(自身を除く): 24829265

約数列:

[1, 3, 5, 13, 15, 19, 25, 39, 57, 65, 75, 95, 195, 247, 285, 325, 475, 741, 975, 1235, 1425, 1531, 3705, 4593, 6175, 7655, 18525, 19903, 22965, 29089, 38275, 59709, 87267, 99515, 114825, 145445, 298545, 378157, 436335, 497575, 727225, 1134471, 1492725, 1890785, 2181675, 5672355, 9453925, 28361775]

約数ペア:

[(1, 28361775), (3, 9453925), (5, 5672355), (13, 2181675), (15, 1890785), (19, 1492725), (25, 1134471), (39, 727225), (57, 497575), (65, 436335), (75, 378157), (95, 298545), (195, 145445), (247, 114825), (285, 99515), (325, 87267), (475, 59709), (741, 38275), (975, 29089), (1235, 22965), (1425, 19903), (1531, 18525), (3705, 7655), (4593, 6175)]