64454920

素因数分解:

$2^3\times 5^1\times {\mathrm{1009}}^1\times {\mathrm{1597}}^1$

素因数の和:2617

約数の個数: 32

約数和(自身を含む): 145258200

約数和(自身を除く): 80803280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1009, 1597, 2018, 3194, 4036, 5045, 6388, 7985, 8072, 10090, 12776, 15970, 20180, 31940, 40360, 63880, 1611373, 3222746, 6445492, 8056865, 12890984, 16113730, 32227460, 64454920]

約数ペア:

[(1, 64454920), (2, 32227460), (4, 16113730), (5, 12890984), (8, 8056865), (10, 6445492), (20, 3222746), (40, 1611373), (1009, 63880), (1597, 40360), (2018, 31940), (3194, 20180), (4036, 15970), (5045, 12776), (6388, 10090), (7985, 8072)]