81288100

素因数分解:

$2^2\times 5^2\times {\mathrm{163}}^1\times {\mathrm{4987}}^1$

素因数の和:5164

約数の個数: 36

約数和(自身を含む): 177512944

約数和(自身を除く): 96224844

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 163, 326, 652, 815, 1630, 3260, 4075, 4987, 8150, 9974, 16300, 19948, 24935, 49870, 99740, 124675, 249350, 498700, 812881, 1625762, 3251524, 4064405, 8128810, 16257620, 20322025, 40644050, 81288100]

約数ペア:

[(1, 81288100), (2, 40644050), (4, 20322025), (5, 16257620), (10, 8128810), (20, 4064405), (25, 3251524), (50, 1625762), (100, 812881), (163, 498700), (326, 249350), (652, 124675), (815, 99740), (1630, 49870), (3260, 24935), (4075, 19948), (4987, 16300), (8150, 9974)]