21384870

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{54833}}^1$

素因数の和:54856

約数の個数: 32

約数和(自身を含む): 55272672

約数和(自身を除く): 33887802

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 54833, 109666, 164499, 274165, 328998, 548330, 712829, 822495, 1425658, 1644990, 2138487, 3564145, 4276974, 7128290, 10692435, 21384870]

約数ペア:

[(1, 21384870), (2, 10692435), (3, 7128290), (5, 4276974), (6, 3564145), (10, 2138487), (13, 1644990), (15, 1425658), (26, 822495), (30, 712829), (39, 548330), (65, 328998), (78, 274165), (130, 164499), (195, 109666), (390, 54833)]