257560310

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{1787}}^1$

素因数の和:1901

約数の個数: 64

約数和(自身を含む): 556139520

約数和(自身を除く): 298579210

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 58, 70, 71, 142, 145, 203, 290, 355, 406, 497, 710, 994, 1015, 1787, 2030, 2059, 2485, 3574, 4118, 4970, 8935, 10295, 12509, 14413, 17870, 20590, 25018, 28826, 51823, 62545, 72065, 103646, 125090, 126877, 144130, 253754, 259115, 362761, 518230, 634385, 725522, 888139, 1268770, 1776278, 1813805, 3627610, 3679433, 4440695, 7358866, 8881390, 18397165, 25756031, 36794330, 51512062, 128780155, 257560310]

約数ペア:

[(1, 257560310), (2, 128780155), (5, 51512062), (7, 36794330), (10, 25756031), (14, 18397165), (29, 8881390), (35, 7358866), (58, 4440695), (70, 3679433), (71, 3627610), (142, 1813805), (145, 1776278), (203, 1268770), (290, 888139), (355, 725522), (406, 634385), (497, 518230), (710, 362761), (994, 259115), (1015, 253754), (1787, 144130), (2030, 126877), (2059, 125090), (2485, 103646), (3574, 72065), (4118, 62545), (4970, 51823), (8935, 28826), (10295, 25018), (12509, 20590), (14413, 17870)]