81335925

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{557}}^1$

素因数の和:643

約数の個数: 72

約数和(自身を含む): 161909280

約数和(自身を除く): 80573355

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 59, 75, 99, 165, 177, 225, 275, 295, 495, 531, 557, 649, 825, 885, 1475, 1671, 1947, 2475, 2655, 2785, 3245, 4425, 5013, 5841, 6127, 8355, 9735, 13275, 13925, 16225, 18381, 25065, 29205, 30635, 32863, 41775, 48675, 55143, 91905, 98589, 125325, 146025, 153175, 164315, 275715, 295767, 361493, 459525, 492945, 821575, 1084479, 1378575, 1478835, 1807465, 2464725, 3253437, 5422395, 7394175, 9037325, 16267185, 27111975, 81335925]

約数ペア:

[(1, 81335925), (3, 27111975), (5, 16267185), (9, 9037325), (11, 7394175), (15, 5422395), (25, 3253437), (33, 2464725), (45, 1807465), (55, 1478835), (59, 1378575), (75, 1084479), (99, 821575), (165, 492945), (177, 459525), (225, 361493), (275, 295767), (295, 275715), (495, 164315), (531, 153175), (557, 146025), (649, 125325), (825, 98589), (885, 91905), (1475, 55143), (1671, 48675), (1947, 41775), (2475, 32863), (2655, 30635), (2785, 29205), (3245, 25065), (4425, 18381), (5013, 16225), (5841, 13925), (6127, 13275), (8355, 9735)]