21963940

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{443}}^1$

素因数の和:556

約数の個数: 48

約数和(自身を含む): 48186432

約数和(自身を除く): 26222492

約数列:

[1, 2, 4, 5, 10, 20, 37, 67, 74, 134, 148, 185, 268, 335, 370, 443, 670, 740, 886, 1340, 1772, 2215, 2479, 4430, 4958, 8860, 9916, 12395, 16391, 24790, 29681, 32782, 49580, 59362, 65564, 81955, 118724, 148405, 163910, 296810, 327820, 593620, 1098197, 2196394, 4392788, 5490985, 10981970, 21963940]

約数ペア:

[(1, 21963940), (2, 10981970), (4, 5490985), (5, 4392788), (10, 2196394), (20, 1098197), (37, 593620), (67, 327820), (74, 296810), (134, 163910), (148, 148405), (185, 118724), (268, 81955), (335, 65564), (370, 59362), (443, 49580), (670, 32782), (740, 29681), (886, 24790), (1340, 16391), (1772, 12395), (2215, 9916), (2479, 8860), (4430, 4958)]