13218440

素因数分解:

$2^3\times 5^1\times {\mathrm{277}}^1\times {\mathrm{1193}}^1$

素因数の和:1481

約数の個数: 32

約数和(自身を含む): 29873880

約数和(自身を除く): 16655440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 277, 554, 1108, 1193, 1385, 2216, 2386, 2770, 4772, 5540, 5965, 9544, 11080, 11930, 23860, 47720, 330461, 660922, 1321844, 1652305, 2643688, 3304610, 6609220, 13218440]

約数ペア:

[(1, 13218440), (2, 6609220), (4, 3304610), (5, 2643688), (8, 1652305), (10, 1321844), (20, 660922), (40, 330461), (277, 47720), (554, 23860), (1108, 11930), (1193, 11080), (1385, 9544), (2216, 5965), (2386, 5540), (2770, 4772)]