20719430

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{307}}^1\times {\mathrm{397}}^1$

素因数の和:728

約数の個数: 32

約数和(自身を含む): 39717216

約数和(自身を除く): 18997786

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 307, 397, 614, 794, 1535, 1985, 3070, 3970, 5219, 6749, 10438, 13498, 26095, 33745, 52190, 67490, 121879, 243758, 609395, 1218790, 2071943, 4143886, 10359715, 20719430]

約数ペア:

[(1, 20719430), (2, 10359715), (5, 4143886), (10, 2071943), (17, 1218790), (34, 609395), (85, 243758), (170, 121879), (307, 67490), (397, 52190), (614, 33745), (794, 26095), (1535, 13498), (1985, 10438), (3070, 6749), (3970, 5219)]