21669039

素因数分解:

$3^5\times 7^1\times {\mathrm{12739}}^1$

素因数の和:12761

約数の個数: 24

約数和(自身を含む): 37098880

約数和(自身を除く): 15429841

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701, 12739, 38217, 89173, 114651, 267519, 343953, 802557, 1031859, 2407671, 3095577, 7223013, 21669039]

約数ペア:

[(1, 21669039), (3, 7223013), (7, 3095577), (9, 2407671), (21, 1031859), (27, 802557), (63, 343953), (81, 267519), (189, 114651), (243, 89173), (567, 38217), (1701, 12739)]