80328020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97961}}^1$

素因数の和:98011

約数の個数: 24

約数和(自身を含む): 172804968

約数和(自身を除く): 92476948

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 97961, 195922, 391844, 489805, 979610, 1959220, 4016401, 8032802, 16065604, 20082005, 40164010, 80328020]

約数ペア:

[(1, 80328020), (2, 40164010), (4, 20082005), (5, 16065604), (10, 8032802), (20, 4016401), (41, 1959220), (82, 979610), (164, 489805), (205, 391844), (410, 195922), (820, 97961)]