21317013

素因数分解:

$3^4\times {\mathrm{89}}^1\times {\mathrm{2957}}^1$

素因数の和:3058

約数の個数: 20

約数和(自身を含む): 32212620

約数和(自身を除く): 10895607

約数列:

[1, 3, 9, 27, 81, 89, 267, 801, 2403, 2957, 7209, 8871, 26613, 79839, 239517, 263173, 789519, 2368557, 7105671, 21317013]

約数ペア:

[(1, 21317013), (3, 7105671), (9, 2368557), (27, 789519), (81, 263173), (89, 239517), (267, 79839), (801, 26613), (2403, 8871), (2957, 7209)]