668515970

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{661897}}^1$

素因数の和:662005

約数の個数: 16

約数和(自身を含む): 1215244728

約数和(自身を除く): 546728758

約数列:

[1, 2, 5, 10, 101, 202, 505, 1010, 661897, 1323794, 3309485, 6618970, 66851597, 133703194, 334257985, 668515970]

約数ペア:

[(1, 668515970), (2, 334257985), (5, 133703194), (10, 66851597), (101, 6618970), (202, 3309485), (505, 1323794), (1010, 661897)]