19949855

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{3691}}^1$

素因数の和:3766

約数の個数: 16

約数和(自身を含む): 25519104

約数和(自身を除く): 5569249

約数列:

[1, 5, 23, 47, 115, 235, 1081, 3691, 5405, 18455, 84893, 173477, 424465, 867385, 3989971, 19949855]

約数ペア:

[(1, 19949855), (5, 3989971), (23, 867385), (47, 424465), (115, 173477), (235, 84893), (1081, 18455), (3691, 5405)]