21490599

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{281}}^1$

素因数の和:387

約数の個数: 32

約数和(自身を含む): 32405184

約数和(自身を除く): 10914585

約数列:

[1, 3, 13, 37, 39, 53, 111, 159, 281, 481, 689, 843, 1443, 1961, 2067, 3653, 5883, 10397, 10959, 14893, 25493, 31191, 44679, 76479, 135161, 193609, 405483, 551041, 580827, 1653123, 7163533, 21490599]

約数ペア:

[(1, 21490599), (3, 7163533), (13, 1653123), (37, 580827), (39, 551041), (53, 405483), (111, 193609), (159, 135161), (281, 76479), (481, 44679), (689, 31191), (843, 25493), (1443, 14893), (1961, 10959), (2067, 10397), (3653, 5883)]