8131780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23917}}^1$

素因数の和:23943

約数の個数: 24

約数和(自身を含む): 18082008

約数和(自身を除く): 9950228

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 23917, 47834, 95668, 119585, 239170, 406589, 478340, 813178, 1626356, 2032945, 4065890, 8131780]

約数ペア:

[(1, 8131780), (2, 4065890), (4, 2032945), (5, 1626356), (10, 813178), (17, 478340), (20, 406589), (34, 239170), (68, 119585), (85, 95668), (170, 47834), (340, 23917)]