257561020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{5851}}^1$

素因数の和:5962

約数の個数: 48

約数和(自身を含む): 566286336

約数和(自身を除く): 308725316

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 71, 124, 142, 155, 284, 310, 355, 620, 710, 1420, 2201, 4402, 5851, 8804, 11005, 11702, 22010, 23404, 29255, 44020, 58510, 117020, 181381, 362762, 415421, 725524, 830842, 906905, 1661684, 1813810, 2077105, 3627620, 4154210, 8308420, 12878051, 25756102, 51512204, 64390255, 128780510, 257561020]

約数ペア:

[(1, 257561020), (2, 128780510), (4, 64390255), (5, 51512204), (10, 25756102), (20, 12878051), (31, 8308420), (62, 4154210), (71, 3627620), (124, 2077105), (142, 1813810), (155, 1661684), (284, 906905), (310, 830842), (355, 725524), (620, 415421), (710, 362762), (1420, 181381), (2201, 117020), (4402, 58510), (5851, 44020), (8804, 29255), (11005, 23404), (11702, 22010)]