19980459830

素因数分解:

$2^1\times 5^1\times {\mathrm{643}}^1\times {\mathrm{3107381}}^1$

素因数の和:3108031

約数の個数: 16

約数和(自身を含む): 36020772144

約数和(自身を除く): 16040312314

約数列:

[1, 2, 5, 10, 643, 1286, 3215, 6430, 3107381, 6214762, 15536905, 31073810, 1998045983, 3996091966, 9990229915, 19980459830]

約数ペア:

[(1, 19980459830), (2, 9990229915), (5, 3996091966), (10, 1998045983), (643, 31073810), (1286, 15536905), (3215, 6214762), (6430, 3107381)]