21443985

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{10139}}^1$

素因数の和:10197

約数の個数: 24

約数和(自身を含む): 37964160

約数和(自身を除く): 16520175

約数列:

[1, 3, 5, 9, 15, 45, 47, 141, 235, 423, 705, 2115, 10139, 30417, 50695, 91251, 152085, 456255, 476533, 1429599, 2382665, 4288797, 7147995, 21443985]

約数ペア:

[(1, 21443985), (3, 7147995), (5, 4288797), (9, 2382665), (15, 1429599), (45, 476533), (47, 456255), (141, 152085), (235, 91251), (423, 50695), (705, 30417), (2115, 10139)]