19996334020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2078621}}^1$

素因数の和:2078680

約数の個数: 48

約数和(自身を含む): 46444729968

約数和(自身を除く): 26448395948

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 185, 260, 370, 481, 740, 962, 1924, 2405, 4810, 9620, 2078621, 4157242, 8314484, 10393105, 20786210, 27022073, 41572420, 54044146, 76908977, 108088292, 135110365, 153817954, 270220730, 307635908, 384544885, 540441460, 769089770, 999816701, 1538179540, 1999633402, 3999266804, 4999083505, 9998167010, 19996334020]

約数ペア:

[(1, 19996334020), (2, 9998167010), (4, 4999083505), (5, 3999266804), (10, 1999633402), (13, 1538179540), (20, 999816701), (26, 769089770), (37, 540441460), (52, 384544885), (65, 307635908), (74, 270220730), (130, 153817954), (148, 135110365), (185, 108088292), (260, 76908977), (370, 54044146), (481, 41572420), (740, 27022073), (962, 20786210), (1924, 10393105), (2405, 8314484), (4810, 4157242), (9620, 2078621)]