20180447

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{167}}^1\times {\mathrm{283}}^1$

素因数の和:518

約数の個数: 16

約数和(自身を含む): 23665152

約数和(自身を除く): 3484705

約数列:

[1, 7, 61, 167, 283, 427, 1169, 1981, 10187, 17263, 47261, 71309, 120841, 330827, 2882921, 20180447]

約数ペア:

[(1, 20180447), (7, 2882921), (61, 330827), (167, 120841), (283, 71309), (427, 47261), (1169, 17263), (1981, 10187)]