64815880

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{10321}}^1$

素因数の和:10489

約数の個数: 32

約数和(自身を含む): 146778840

約数和(自身を除く): 81962960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 6280, 10321, 20642, 41284, 51605, 82568, 103210, 206420, 412840, 1620397, 3240794, 6481588, 8101985, 12963176, 16203970, 32407940, 64815880]

約数ペア:

[(1, 64815880), (2, 32407940), (4, 16203970), (5, 12963176), (8, 8101985), (10, 6481588), (20, 3240794), (40, 1620397), (157, 412840), (314, 206420), (628, 103210), (785, 82568), (1256, 51605), (1570, 41284), (3140, 20642), (6280, 10321)]