20163971480

素因数分解:

$2^3\times 5^1\times {\mathrm{40357}}^1\times {\mathrm{12491}}^1$

素因数の和:52859

約数の個数: 32

約数和(自身を含む): 45373692240

約数和(自身を除く): 25209720760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 12491, 24982, 40357, 49964, 62455, 80714, 99928, 124910, 161428, 201785, 249820, 322856, 403570, 499640, 807140, 1614280, 504099287, 1008198574, 2016397148, 2520496435, 4032794296, 5040992870, 10081985740, 20163971480]

約数ペア:

[(1, 20163971480), (2, 10081985740), (4, 5040992870), (5, 4032794296), (8, 2520496435), (10, 2016397148), (20, 1008198574), (40, 504099287), (12491, 1614280), (24982, 807140), (40357, 499640), (49964, 403570), (62455, 322856), (80714, 249820), (99928, 201785), (124910, 161428)]