81764920

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{70487}}^1$

素因数の和:70527

約数の個数: 32

約数和(自身を含む): 190317600

約数和(自身を除く): 108552680

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 70487, 140974, 281948, 352435, 563896, 704870, 1409740, 2044123, 2819480, 4088246, 8176492, 10220615, 16352984, 20441230, 40882460, 81764920]

約数ペア:

[(1, 81764920), (2, 40882460), (4, 20441230), (5, 16352984), (8, 10220615), (10, 8176492), (20, 4088246), (29, 2819480), (40, 2044123), (58, 1409740), (116, 704870), (145, 563896), (232, 352435), (290, 281948), (580, 140974), (1160, 70487)]