77427790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{1721}}^1$

素因数の和:2148

約数の個数: 32

約数和(自身を含む): 152500320

約数和(自身を除く): 75072530

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 409, 818, 1721, 2045, 3442, 4090, 4499, 8605, 8998, 17210, 18931, 22495, 37862, 44990, 94655, 189310, 703889, 1407778, 3519445, 7038890, 7742779, 15485558, 38713895, 77427790]

約数ペア:

[(1, 77427790), (2, 38713895), (5, 15485558), (10, 7742779), (11, 7038890), (22, 3519445), (55, 1407778), (110, 703889), (409, 189310), (818, 94655), (1721, 44990), (2045, 37862), (3442, 22495), (4090, 18931), (4499, 17210), (8605, 8998)]