2020388020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{127711}}^1$

素因数の和:127840

約数の個数: 48

約数和(自身を含む): 4891880448

約数和(自身を除く): 2871492428

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 113, 140, 226, 452, 565, 791, 1130, 1582, 2260, 3164, 3955, 7910, 15820, 127711, 255422, 510844, 638555, 893977, 1277110, 1787954, 2554220, 3575908, 4469885, 8939770, 14431343, 17879540, 28862686, 57725372, 72156715, 101019401, 144313430, 202038802, 288626860, 404077604, 505097005, 1010194010, 2020388020]

約数ペア:

[(1, 2020388020), (2, 1010194010), (4, 505097005), (5, 404077604), (7, 288626860), (10, 202038802), (14, 144313430), (20, 101019401), (28, 72156715), (35, 57725372), (70, 28862686), (113, 17879540), (140, 14431343), (226, 8939770), (452, 4469885), (565, 3575908), (791, 2554220), (1130, 1787954), (1582, 1277110), (2260, 893977), (3164, 638555), (3955, 510844), (7910, 255422), (15820, 127711)]