21447678

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{1987}}^1$

素因数の和:2256

約数の個数: 32

約数和(自身を含む): 49238784

約数和(自身を除く): 27791106

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 257, 514, 771, 1542, 1799, 1987, 3598, 3974, 5397, 5961, 10794, 11922, 13909, 27818, 41727, 83454, 510659, 1021318, 1531977, 3063954, 3574613, 7149226, 10723839, 21447678]

約数ペア:

[(1, 21447678), (2, 10723839), (3, 7149226), (6, 3574613), (7, 3063954), (14, 1531977), (21, 1021318), (42, 510659), (257, 83454), (514, 41727), (771, 27818), (1542, 13909), (1799, 11922), (1987, 10794), (3598, 5961), (3974, 5397)]