19853240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{45121}}^1$

素因数の和:45143

約数の個数: 32

約数和(自身を含む): 48731760

約数和(自身を除く): 28878520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 45121, 90242, 180484, 225605, 360968, 451210, 496331, 902420, 992662, 1804840, 1985324, 2481655, 3970648, 4963310, 9926620, 19853240]

約数ペア:

[(1, 19853240), (2, 9926620), (4, 4963310), (5, 3970648), (8, 2481655), (10, 1985324), (11, 1804840), (20, 992662), (22, 902420), (40, 496331), (44, 451210), (55, 360968), (88, 225605), (110, 180484), (220, 90242), (440, 45121)]