255618615

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{127}}^1\times {\mathrm{661}}^1$

素因数の和:832

約数の個数: 64

約数和(自身を含む): 488079360

約数和(自身を除く): 232460745

約数列:

[1, 3, 5, 7, 15, 21, 29, 35, 87, 105, 127, 145, 203, 381, 435, 609, 635, 661, 889, 1015, 1905, 1983, 2667, 3045, 3305, 3683, 4445, 4627, 9915, 11049, 13335, 13881, 18415, 19169, 23135, 25781, 55245, 57507, 69405, 77343, 83947, 95845, 128905, 134183, 251841, 287535, 386715, 402549, 419735, 587629, 670915, 1259205, 1762887, 2012745, 2434463, 2938145, 7303389, 8814435, 12172315, 17041241, 36516945, 51123723, 85206205, 255618615]

約数ペア:

[(1, 255618615), (3, 85206205), (5, 51123723), (7, 36516945), (15, 17041241), (21, 12172315), (29, 8814435), (35, 7303389), (87, 2938145), (105, 2434463), (127, 2012745), (145, 1762887), (203, 1259205), (381, 670915), (435, 587629), (609, 419735), (635, 402549), (661, 386715), (889, 287535), (1015, 251841), (1905, 134183), (1983, 128905), (2667, 95845), (3045, 83947), (3305, 77343), (3683, 69405), (4445, 57507), (4627, 55245), (9915, 25781), (11049, 23135), (13335, 19169), (13881, 18415)]