20176660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4649}}^1$

素因数の和:4696

約数の個数: 48

約数和(自身を含む): 49996800

約数和(自身を除く): 29820140

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 4649, 9298, 18596, 23245, 32543, 46490, 65086, 92980, 130172, 144119, 162715, 288238, 325430, 576476, 650860, 720595, 1008833, 1441190, 2017666, 2882380, 4035332, 5044165, 10088330, 20176660]

約数ペア:

[(1, 20176660), (2, 10088330), (4, 5044165), (5, 4035332), (7, 2882380), (10, 2017666), (14, 1441190), (20, 1008833), (28, 720595), (31, 650860), (35, 576476), (62, 325430), (70, 288238), (124, 162715), (140, 144119), (155, 130172), (217, 92980), (310, 65086), (434, 46490), (620, 32543), (868, 23245), (1085, 18596), (2170, 9298), (4340, 4649)]