21813138

素因数分解:

$2^1\times 3^7\times {\mathrm{4987}}^1$

素因数の和:5010

約数の個数: 32

約数和(自身を含む): 49081920

約数和(自身を除く): 27268782

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 243, 486, 729, 1458, 2187, 4374, 4987, 9974, 14961, 29922, 44883, 89766, 134649, 269298, 403947, 807894, 1211841, 2423682, 3635523, 7271046, 10906569, 21813138]

約数ペア:

[(1, 21813138), (2, 10906569), (3, 7271046), (6, 3635523), (9, 2423682), (18, 1211841), (27, 807894), (54, 403947), (81, 269298), (162, 134649), (243, 89766), (486, 44883), (729, 29922), (1458, 14961), (2187, 9974), (4374, 4987)]