21452356

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{191}}^1\times {\mathrm{653}}^1$

素因数の和:891

約数の個数: 24

約数和(自身を含む): 38674944

約数和(自身を除く): 17222588

約数列:

[1, 2, 4, 43, 86, 172, 191, 382, 653, 764, 1306, 2612, 8213, 16426, 28079, 32852, 56158, 112316, 124723, 249446, 498892, 5363089, 10726178, 21452356]

約数ペア:

[(1, 21452356), (2, 10726178), (4, 5363089), (43, 498892), (86, 249446), (172, 124723), (191, 112316), (382, 56158), (653, 32852), (764, 28079), (1306, 16426), (2612, 8213)]