21494636

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{251}}^1\times {\mathrm{271}}^1$

素因数の和:605

約数の個数: 24

約数和(自身を含む): 38384640

約数和(自身を除く): 16890004

約数列:

[1, 2, 4, 79, 158, 251, 271, 316, 502, 542, 1004, 1084, 19829, 21409, 39658, 42818, 68021, 79316, 85636, 136042, 272084, 5373659, 10747318, 21494636]

約数ペア:

[(1, 21494636), (2, 10747318), (4, 5373659), (79, 272084), (158, 136042), (251, 85636), (271, 79316), (316, 68021), (502, 42818), (542, 39658), (1004, 21409), (1084, 19829)]