19564840

素因数分解:

$2^3\times 5^1\times {\mathrm{461}}^1\times {\mathrm{1061}}^1$

素因数の和:1533

約数の個数: 32

約数和(自身を含む): 44157960

約数和(自身を除く): 24593120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 461, 922, 1061, 1844, 2122, 2305, 3688, 4244, 4610, 5305, 8488, 9220, 10610, 18440, 21220, 42440, 489121, 978242, 1956484, 2445605, 3912968, 4891210, 9782420, 19564840]

約数ペア:

[(1, 19564840), (2, 9782420), (4, 4891210), (5, 3912968), (8, 2445605), (10, 1956484), (20, 978242), (40, 489121), (461, 42440), (922, 21220), (1061, 18440), (1844, 10610), (2122, 9220), (2305, 8488), (3688, 5305), (4244, 4610)]