51311480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{277}}^1\times {\mathrm{421}}^1$

素因数の和:720

約数の個数: 64

約数和(自身を含む): 126701280

約数和(自身を除く): 75389800

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 277, 421, 440, 554, 842, 1108, 1385, 1684, 2105, 2216, 2770, 3047, 3368, 4210, 4631, 5540, 6094, 8420, 9262, 11080, 12188, 15235, 16840, 18524, 23155, 24376, 30470, 37048, 46310, 60940, 92620, 116617, 121880, 185240, 233234, 466468, 583085, 932936, 1166170, 1282787, 2332340, 2565574, 4664680, 5131148, 6413935, 10262296, 12827870, 25655740, 51311480]

約数ペア:

[(1, 51311480), (2, 25655740), (4, 12827870), (5, 10262296), (8, 6413935), (10, 5131148), (11, 4664680), (20, 2565574), (22, 2332340), (40, 1282787), (44, 1166170), (55, 932936), (88, 583085), (110, 466468), (220, 233234), (277, 185240), (421, 121880), (440, 116617), (554, 92620), (842, 60940), (1108, 46310), (1385, 37048), (1684, 30470), (2105, 24376), (2216, 23155), (2770, 18524), (3047, 16840), (3368, 15235), (4210, 12188), (4631, 11080), (5540, 9262), (6094, 8420)]