12438940

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{2789}}^1$

素因数の和:3021

約数の個数: 24

約数和(自身を含む): 26248320

約数和(自身を除く): 13809380

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 2789, 4460, 5578, 11156, 13945, 27890, 55780, 621947, 1243894, 2487788, 3109735, 6219470, 12438940]

約数ペア:

[(1, 12438940), (2, 6219470), (4, 3109735), (5, 2487788), (10, 1243894), (20, 621947), (223, 55780), (446, 27890), (892, 13945), (1115, 11156), (2230, 5578), (2789, 4460)]