19855550

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2777}}^1$

素因数の和:2813

約数の個数: 48

約数和(自身を含む): 43403472

約数和(自身を除く): 23547922

約数列:

[1, 2, 5, 10, 11, 13, 22, 25, 26, 50, 55, 65, 110, 130, 143, 275, 286, 325, 550, 650, 715, 1430, 2777, 3575, 5554, 7150, 13885, 27770, 30547, 36101, 61094, 69425, 72202, 138850, 152735, 180505, 305470, 361010, 397111, 763675, 794222, 902525, 1527350, 1805050, 1985555, 3971110, 9927775, 19855550]

約数ペア:

[(1, 19855550), (2, 9927775), (5, 3971110), (10, 1985555), (11, 1805050), (13, 1527350), (22, 902525), (25, 794222), (26, 763675), (50, 397111), (55, 361010), (65, 305470), (110, 180505), (130, 152735), (143, 138850), (275, 72202), (286, 69425), (325, 61094), (550, 36101), (650, 30547), (715, 27770), (1430, 13885), (2777, 7150), (3575, 5554)]