13998220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{397}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 30891168

約数和(自身を除く): 16892948

約数列:

[1, 2, 4, 5, 10, 20, 41, 43, 82, 86, 164, 172, 205, 215, 397, 410, 430, 794, 820, 860, 1588, 1763, 1985, 3526, 3970, 7052, 7940, 8815, 16277, 17071, 17630, 32554, 34142, 35260, 65108, 68284, 81385, 85355, 162770, 170710, 325540, 341420, 699911, 1399822, 2799644, 3499555, 6999110, 13998220]

約数ペア:

[(1, 13998220), (2, 6999110), (4, 3499555), (5, 2799644), (10, 1399822), (20, 699911), (41, 341420), (43, 325540), (82, 170710), (86, 162770), (164, 85355), (172, 81385), (205, 68284), (215, 65108), (397, 35260), (410, 34142), (430, 32554), (794, 17630), (820, 17071), (860, 16277), (1588, 8815), (1763, 7940), (1985, 7052), (3526, 3970)]