79630420

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1\times {\mathrm{499}}^1$

素因数の和:688

約数の個数: 48

約数和(自身を含む): 171360000

約数和(自身を除く): 91729580

約数列:

[1, 2, 4, 5, 10, 20, 79, 101, 158, 202, 316, 395, 404, 499, 505, 790, 998, 1010, 1580, 1996, 2020, 2495, 4990, 7979, 9980, 15958, 31916, 39421, 39895, 50399, 78842, 79790, 100798, 157684, 159580, 197105, 201596, 251995, 394210, 503990, 788420, 1007980, 3981521, 7963042, 15926084, 19907605, 39815210, 79630420]

約数ペア:

[(1, 79630420), (2, 39815210), (4, 19907605), (5, 15926084), (10, 7963042), (20, 3981521), (79, 1007980), (101, 788420), (158, 503990), (202, 394210), (316, 251995), (395, 201596), (404, 197105), (499, 159580), (505, 157684), (790, 100798), (998, 79790), (1010, 78842), (1580, 50399), (1996, 39895), (2020, 39421), (2495, 31916), (4990, 15958), (7979, 9980)]