257900540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{6959}}^1$

素因数の和:7094

約数の個数: 48

約数和(自身を含む): 578793600

約数和(自身を除く): 320893060

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 109, 170, 218, 340, 436, 545, 1090, 1853, 2180, 3706, 6959, 7412, 9265, 13918, 18530, 27836, 34795, 37060, 69590, 118303, 139180, 236606, 473212, 591515, 758531, 1183030, 1517062, 2366060, 3034124, 3792655, 7585310, 12895027, 15170620, 25790054, 51580108, 64475135, 128950270, 257900540]

約数ペア:

[(1, 257900540), (2, 128950270), (4, 64475135), (5, 51580108), (10, 25790054), (17, 15170620), (20, 12895027), (34, 7585310), (68, 3792655), (85, 3034124), (109, 2366060), (170, 1517062), (218, 1183030), (340, 758531), (436, 591515), (545, 473212), (1090, 236606), (1853, 139180), (2180, 118303), (3706, 69590), (6959, 37060), (7412, 34795), (9265, 27836), (13918, 18530)]