438668840

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{267481}}^1$

素因数の和:267533

約数の個数: 32

約数和(自身を含む): 1011081960

約数和(自身を除く): 572413120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 267481, 534962, 1069924, 1337405, 2139848, 2674810, 5349620, 10699240, 10966721, 21933442, 43866884, 54833605, 87733768, 109667210, 219334420, 438668840]

約数ペア:

[(1, 438668840), (2, 219334420), (4, 109667210), (5, 87733768), (8, 54833605), (10, 43866884), (20, 21933442), (40, 10966721), (41, 10699240), (82, 5349620), (164, 2674810), (205, 2139848), (328, 1337405), (410, 1069924), (820, 534962), (1640, 267481)]