21362859

素因数分解:

$3^5\times 7^1\times {\mathrm{19}}^1\times {\mathrm{661}}^1$

素因数の和:702

約数の個数: 48

約数和(自身を含む): 38554880

約数和(自身を除く): 17192021

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 81, 133, 171, 189, 243, 399, 513, 567, 661, 1197, 1539, 1701, 1983, 3591, 4617, 4627, 5949, 10773, 12559, 13881, 17847, 32319, 37677, 41643, 53541, 87913, 113031, 124929, 160623, 263739, 339093, 374787, 791217, 1017279, 1124361, 2373651, 3051837, 7120953, 21362859]

約数ペア:

[(1, 21362859), (3, 7120953), (7, 3051837), (9, 2373651), (19, 1124361), (21, 1017279), (27, 791217), (57, 374787), (63, 339093), (81, 263739), (133, 160623), (171, 124929), (189, 113031), (243, 87913), (399, 53541), (513, 41643), (567, 37677), (661, 32319), (1197, 17847), (1539, 13881), (1701, 12559), (1983, 10773), (3591, 5949), (4617, 4627)]