21584205

素因数分解:

$3^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1583}}^1$

素因数の和:1698

約数の個数: 32

約数和(自身を含む): 38776320

約数和(自身を除く): 17192115

約数列:

[1, 3, 5, 9, 15, 27, 45, 101, 135, 303, 505, 909, 1515, 1583, 2727, 4545, 4749, 7915, 13635, 14247, 23745, 42741, 71235, 159883, 213705, 479649, 799415, 1438947, 2398245, 4316841, 7194735, 21584205]

約数ペア:

[(1, 21584205), (3, 7194735), (5, 4316841), (9, 2398245), (15, 1438947), (27, 799415), (45, 479649), (101, 213705), (135, 159883), (303, 71235), (505, 42741), (909, 23745), (1515, 14247), (1583, 13635), (2727, 7915), (4545, 4749)]