21465345

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{167}}^1$

素因数の和:246

約数の個数: 64

約数和(自身を含む): 40642560

約数和(自身を除く): 19177215

約数列:

[1, 3, 5, 11, 15, 19, 33, 41, 55, 57, 95, 123, 165, 167, 205, 209, 285, 451, 501, 615, 627, 779, 835, 1045, 1353, 1837, 2255, 2337, 2505, 3135, 3173, 3895, 5511, 6765, 6847, 8569, 9185, 9519, 11685, 15865, 20541, 25707, 27555, 34235, 34903, 42845, 47595, 75317, 102705, 104709, 128535, 130093, 174515, 225951, 376585, 390279, 523545, 650465, 1129755, 1431023, 1951395, 4293069, 7155115, 21465345]

約数ペア:

[(1, 21465345), (3, 7155115), (5, 4293069), (11, 1951395), (15, 1431023), (19, 1129755), (33, 650465), (41, 523545), (55, 390279), (57, 376585), (95, 225951), (123, 174515), (165, 130093), (167, 128535), (205, 104709), (209, 102705), (285, 75317), (451, 47595), (501, 42845), (615, 34903), (627, 34235), (779, 27555), (835, 25707), (1045, 20541), (1353, 15865), (1837, 11685), (2255, 9519), (2337, 9185), (2505, 8569), (3135, 6847), (3173, 6765), (3895, 5511)]