25720365

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{383}}^1$

素因数の和:450

約数の個数: 48

約数和(自身を含む): 46577664

約数和(自身を除く): 20857299

約数列:

[1, 3, 5, 11, 15, 33, 37, 55, 111, 121, 165, 185, 363, 383, 407, 555, 605, 1149, 1221, 1815, 1915, 2035, 4213, 4477, 5745, 6105, 12639, 13431, 14171, 21065, 22385, 42513, 46343, 63195, 67155, 70855, 139029, 155881, 212565, 231715, 467643, 695145, 779405, 1714691, 2338215, 5144073, 8573455, 25720365]

約数ペア:

[(1, 25720365), (3, 8573455), (5, 5144073), (11, 2338215), (15, 1714691), (33, 779405), (37, 695145), (55, 467643), (111, 231715), (121, 212565), (165, 155881), (185, 139029), (363, 70855), (383, 67155), (407, 63195), (555, 46343), (605, 42513), (1149, 22385), (1221, 21065), (1815, 14171), (1915, 13431), (2035, 12639), (4213, 6105), (4477, 5745)]