638860118

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{225427}}^1$

素因数の和:225551

約数の個数: 16

約数和(自身を含む): 1041477360

約数和(自身を除く): 402617242

約数列:

[1, 2, 13, 26, 109, 218, 1417, 2834, 225427, 450854, 2930551, 5861102, 24571543, 49143086, 319430059, 638860118]

約数ペア:

[(1, 638860118), (2, 319430059), (13, 49143086), (26, 24571543), (109, 5861102), (218, 2930551), (1417, 450854), (2834, 225427)]