21739185

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4129}}^1$

素因数の和:4159

約数の個数: 40

約数和(自身を含む): 41977320

約数和(自身を除く): 20238135

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 117, 135, 195, 351, 405, 585, 1053, 1755, 4129, 5265, 12387, 20645, 37161, 53677, 61935, 111483, 161031, 185805, 268385, 334449, 483093, 557415, 805155, 1449279, 1672245, 2415465, 4347837, 7246395, 21739185]

約数ペア:

[(1, 21739185), (3, 7246395), (5, 4347837), (9, 2415465), (13, 1672245), (15, 1449279), (27, 805155), (39, 557415), (45, 483093), (65, 334449), (81, 268385), (117, 185805), (135, 161031), (195, 111483), (351, 61935), (405, 53677), (585, 37161), (1053, 20645), (1755, 12387), (4129, 5265)]