21072130

素因数分解:

$2^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{5417}}^1$

素因数の和:5813

約数の個数: 16

約数和(自身を含む): 38034360

約数和(自身を除く): 16962230

約数列:

[1, 2, 5, 10, 389, 778, 1945, 3890, 5417, 10834, 27085, 54170, 2107213, 4214426, 10536065, 21072130]

約数ペア:

[(1, 21072130), (2, 10536065), (5, 4214426), (10, 2107213), (389, 54170), (778, 27085), (1945, 10834), (3890, 5417)]