19692440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15881}}^1$

素因数の和:15923

約数の個数: 32

約数和(自身を含む): 45740160

約数和(自身を除く): 26047720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 15881, 31762, 63524, 79405, 127048, 158810, 317620, 492311, 635240, 984622, 1969244, 2461555, 3938488, 4923110, 9846220, 19692440]

約数ペア:

[(1, 19692440), (2, 9846220), (4, 4923110), (5, 3938488), (8, 2461555), (10, 1969244), (20, 984622), (31, 635240), (40, 492311), (62, 317620), (124, 158810), (155, 127048), (248, 79405), (310, 63524), (620, 31762), (1240, 15881)]