21535389

素因数分解:

$3^7\times {\mathrm{43}}^1\times {\mathrm{229}}^1$

素因数の和:293

約数の個数: 32

約数和(自身を含む): 33193600

約数和(自身を除く): 11658211

約数列:

[1, 3, 9, 27, 43, 81, 129, 229, 243, 387, 687, 729, 1161, 2061, 2187, 3483, 6183, 9847, 10449, 18549, 29541, 31347, 55647, 88623, 94041, 166941, 265869, 500823, 797607, 2392821, 7178463, 21535389]

約数ペア:

[(1, 21535389), (3, 7178463), (9, 2392821), (27, 797607), (43, 500823), (81, 265869), (129, 166941), (229, 94041), (243, 88623), (387, 55647), (687, 31347), (729, 29541), (1161, 18549), (2061, 10449), (2187, 9847), (3483, 6183)]