20992280

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30871}}^1$

素因数の和:30899

約数の個数: 32

約数和(自身を含む): 50012640

約数和(自身を除く): 29020360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 30871, 61742, 123484, 154355, 246968, 308710, 524807, 617420, 1049614, 1234840, 2099228, 2624035, 4198456, 5248070, 10496140, 20992280]

約数ペア:

[(1, 20992280), (2, 10496140), (4, 5248070), (5, 4198456), (8, 2624035), (10, 2099228), (17, 1234840), (20, 1049614), (34, 617420), (40, 524807), (68, 308710), (85, 246968), (136, 154355), (170, 123484), (340, 61742), (680, 30871)]