27996440

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{397}}^1$

素因数の和:492

約数の個数: 64

約数和(自身を含む): 66195360

約数和(自身を除く): 38198920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 43, 82, 86, 164, 172, 205, 215, 328, 344, 397, 410, 430, 794, 820, 860, 1588, 1640, 1720, 1763, 1985, 3176, 3526, 3970, 7052, 7940, 8815, 14104, 15880, 16277, 17071, 17630, 32554, 34142, 35260, 65108, 68284, 70520, 81385, 85355, 130216, 136568, 162770, 170710, 325540, 341420, 651080, 682840, 699911, 1399822, 2799644, 3499555, 5599288, 6999110, 13998220, 27996440]

約数ペア:

[(1, 27996440), (2, 13998220), (4, 6999110), (5, 5599288), (8, 3499555), (10, 2799644), (20, 1399822), (40, 699911), (41, 682840), (43, 651080), (82, 341420), (86, 325540), (164, 170710), (172, 162770), (205, 136568), (215, 130216), (328, 85355), (344, 81385), (397, 70520), (410, 68284), (430, 65108), (794, 35260), (820, 34142), (860, 32554), (1588, 17630), (1640, 17071), (1720, 16277), (1763, 15880), (1985, 14104), (3176, 8815), (3526, 7940), (3970, 7052)]