254222020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{22739}}^1$

素因数の和:22804

約数の個数: 48

約数和(自身を含む): 588329280

約数和(自身を除く): 334107260

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 172, 215, 260, 430, 559, 860, 1118, 2236, 2795, 5590, 11180, 22739, 45478, 90956, 113695, 227390, 295607, 454780, 591214, 977777, 1182428, 1478035, 1955554, 2956070, 3911108, 4888885, 5912140, 9777770, 12711101, 19555540, 25422202, 50844404, 63555505, 127111010, 254222020]

約数ペア:

[(1, 254222020), (2, 127111010), (4, 63555505), (5, 50844404), (10, 25422202), (13, 19555540), (20, 12711101), (26, 9777770), (43, 5912140), (52, 4888885), (65, 3911108), (86, 2956070), (130, 1955554), (172, 1478035), (215, 1182428), (260, 977777), (430, 591214), (559, 454780), (860, 295607), (1118, 227390), (2236, 113695), (2795, 90956), (5590, 45478), (11180, 22739)]