20782850

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1303}}^1$

素因数の和:1355

約数の個数: 48

約数和(自身を含む): 43657920

約数和(自身を除く): 22875070

約数列:

[1, 2, 5, 10, 11, 22, 25, 29, 50, 55, 58, 110, 145, 275, 290, 319, 550, 638, 725, 1303, 1450, 1595, 2606, 3190, 6515, 7975, 13030, 14333, 15950, 28666, 32575, 37787, 65150, 71665, 75574, 143330, 188935, 358325, 377870, 415657, 716650, 831314, 944675, 1889350, 2078285, 4156570, 10391425, 20782850]

約数ペア:

[(1, 20782850), (2, 10391425), (5, 4156570), (10, 2078285), (11, 1889350), (22, 944675), (25, 831314), (29, 716650), (50, 415657), (55, 377870), (58, 358325), (110, 188935), (145, 143330), (275, 75574), (290, 71665), (319, 65150), (550, 37787), (638, 32575), (725, 28666), (1303, 15950), (1450, 14333), (1595, 13030), (2606, 7975), (3190, 6515)]