18931000

素因数分解:

$2^3\times 5^3\times {\mathrm{11}}^1\times {\mathrm{1721}}^1$

素因数の和:1753

約数の個数: 64

約数和(自身を含む): 48353760

約数和(自身を除く): 29422760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 125, 200, 220, 250, 275, 440, 500, 550, 1000, 1100, 1375, 1721, 2200, 2750, 3442, 5500, 6884, 8605, 11000, 13768, 17210, 18931, 34420, 37862, 43025, 68840, 75724, 86050, 94655, 151448, 172100, 189310, 215125, 344200, 378620, 430250, 473275, 757240, 860500, 946550, 1721000, 1893100, 2366375, 3786200, 4732750, 9465500, 18931000]

約数ペア:

[(1, 18931000), (2, 9465500), (4, 4732750), (5, 3786200), (8, 2366375), (10, 1893100), (11, 1721000), (20, 946550), (22, 860500), (25, 757240), (40, 473275), (44, 430250), (50, 378620), (55, 344200), (88, 215125), (100, 189310), (110, 172100), (125, 151448), (200, 94655), (220, 86050), (250, 75724), (275, 68840), (440, 43025), (500, 37862), (550, 34420), (1000, 18931), (1100, 17210), (1375, 13768), (1721, 11000), (2200, 8605), (2750, 6884), (3442, 5500)]