21993270

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{56393}}^1$

素因数の和:56416

約数の個数: 32

約数和(自身を含む): 56845152

約数和(自身を除く): 34851882

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 56393, 112786, 169179, 281965, 338358, 563930, 733109, 845895, 1466218, 1691790, 2199327, 3665545, 4398654, 7331090, 10996635, 21993270]

約数ペア:

[(1, 21993270), (2, 10996635), (3, 7331090), (5, 4398654), (6, 3665545), (10, 2199327), (13, 1691790), (15, 1466218), (26, 845895), (30, 733109), (39, 563930), (65, 338358), (78, 281965), (130, 169179), (195, 112786), (390, 56393)]