18772520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{2777}}^1$

素因数の和:2814

約数の個数: 48

約数和(自身を含む): 45753660

約数和(自身を除く): 26981140

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 260, 338, 520, 676, 845, 1352, 1690, 2777, 3380, 5554, 6760, 11108, 13885, 22216, 27770, 36101, 55540, 72202, 111080, 144404, 180505, 288808, 361010, 469313, 722020, 938626, 1444040, 1877252, 2346565, 3754504, 4693130, 9386260, 18772520]

約数ペア:

[(1, 18772520), (2, 9386260), (4, 4693130), (5, 3754504), (8, 2346565), (10, 1877252), (13, 1444040), (20, 938626), (26, 722020), (40, 469313), (52, 361010), (65, 288808), (104, 180505), (130, 144404), (169, 111080), (260, 72202), (338, 55540), (520, 36101), (676, 27770), (845, 22216), (1352, 13885), (1690, 11108), (2777, 6760), (3380, 5554)]