18688996

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{197}}^1\times {\mathrm{641}}^1$

素因数の和:879

約数の個数: 24

約数和(自身を含む): 33812856

約数和(自身を除く): 15123860

約数列:

[1, 2, 4, 37, 74, 148, 197, 394, 641, 788, 1282, 2564, 7289, 14578, 23717, 29156, 47434, 94868, 126277, 252554, 505108, 4672249, 9344498, 18688996]

約数ペア:

[(1, 18688996), (2, 9344498), (4, 4672249), (37, 505108), (74, 252554), (148, 126277), (197, 94868), (394, 47434), (641, 29156), (788, 23717), (1282, 14578), (2564, 7289)]