21489291256

素因数分解:

$2^3\times {\mathrm{1231}}^1\times {\mathrm{2182097}}^1$

素因数の和:2183334

約数の個数: 16

約数和(自身を含む): 40325171040

約数和(自身を除く): 18835879784

約数列:

[1, 2, 4, 8, 1231, 2462, 4924, 9848, 2182097, 4364194, 8728388, 17456776, 2686161407, 5372322814, 10744645628, 21489291256]

約数ペア:

[(1, 21489291256), (2, 10744645628), (4, 5372322814), (8, 2686161407), (1231, 17456776), (2462, 8728388), (4924, 4364194), (9848, 2182097)]