21669921

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{26459}}^1$

素因数の和:26485

約数の個数: 24

約数和(自身を含む): 38525760

約数和(自身を除く): 16855839

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 26459, 79377, 185213, 238131, 343967, 555639, 1031901, 1666917, 2407769, 3095703, 7223307, 21669921]

約数ペア:

[(1, 21669921), (3, 7223307), (7, 3095703), (9, 2407769), (13, 1666917), (21, 1031901), (39, 555639), (63, 343967), (91, 238131), (117, 185213), (273, 79377), (819, 26459)]