21781458

素因数分解:

$2^1\times 3^2\times {\mathrm{101}}^1\times {\mathrm{11981}}^1$

素因数の和:12090

約数の個数: 24

約数和(自身を含む): 47664396

約数和(自身を除く): 25882938

約数列:

[1, 2, 3, 6, 9, 18, 101, 202, 303, 606, 909, 1818, 11981, 23962, 35943, 71886, 107829, 215658, 1210081, 2420162, 3630243, 7260486, 10890729, 21781458]

約数ペア:

[(1, 21781458), (2, 10890729), (3, 7260486), (6, 3630243), (9, 2420162), (18, 1210081), (101, 215658), (202, 107829), (303, 71886), (606, 35943), (909, 23962), (1818, 11981)]