19793240

素因数分解:

$2^3\times 5^1\times {\mathrm{443}}^1\times {\mathrm{1117}}^1$

素因数の和:1571

約数の個数: 32

約数和(自身を含む): 44675280

約数和(自身を除く): 24882040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 443, 886, 1117, 1772, 2215, 2234, 3544, 4430, 4468, 5585, 8860, 8936, 11170, 17720, 22340, 44680, 494831, 989662, 1979324, 2474155, 3958648, 4948310, 9896620, 19793240]

約数ペア:

[(1, 19793240), (2, 9896620), (4, 4948310), (5, 3958648), (8, 2474155), (10, 1979324), (20, 989662), (40, 494831), (443, 44680), (886, 22340), (1117, 17720), (1772, 11170), (2215, 8936), (2234, 8860), (3544, 5585), (4430, 4468)]