21523220

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{863}}^1$

素因数の和:944

約数の個数: 48

約数和(自身を含む): 47900160

約数和(自身を除く): 26376940

約数列:

[1, 2, 4, 5, 10, 20, 29, 43, 58, 86, 116, 145, 172, 215, 290, 430, 580, 860, 863, 1247, 1726, 2494, 3452, 4315, 4988, 6235, 8630, 12470, 17260, 24940, 25027, 37109, 50054, 74218, 100108, 125135, 148436, 185545, 250270, 371090, 500540, 742180, 1076161, 2152322, 4304644, 5380805, 10761610, 21523220]

約数ペア:

[(1, 21523220), (2, 10761610), (4, 5380805), (5, 4304644), (10, 2152322), (20, 1076161), (29, 742180), (43, 500540), (58, 371090), (86, 250270), (116, 185545), (145, 148436), (172, 125135), (215, 100108), (290, 74218), (430, 50054), (580, 37109), (860, 25027), (863, 24940), (1247, 17260), (1726, 12470), (2494, 8630), (3452, 6235), (4315, 4988)]