18806320

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^3\times {\mathrm{107}}^1$

素因数の和:159

約数の個数: 80

約数和(自身を含む): 47809440

約数和(自身を除く): 29003120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 107, 130, 169, 208, 214, 260, 338, 428, 520, 535, 676, 845, 856, 1040, 1070, 1352, 1391, 1690, 1712, 2140, 2197, 2704, 2782, 3380, 4280, 4394, 5564, 6760, 6955, 8560, 8788, 10985, 11128, 13520, 13910, 17576, 18083, 21970, 22256, 27820, 35152, 36166, 43940, 55640, 72332, 87880, 90415, 111280, 144664, 175760, 180830, 235079, 289328, 361660, 470158, 723320, 940316, 1175395, 1446640, 1880632, 2350790, 3761264, 4701580, 9403160, 18806320]

約数ペア:

[(1, 18806320), (2, 9403160), (4, 4701580), (5, 3761264), (8, 2350790), (10, 1880632), (13, 1446640), (16, 1175395), (20, 940316), (26, 723320), (40, 470158), (52, 361660), (65, 289328), (80, 235079), (104, 180830), (107, 175760), (130, 144664), (169, 111280), (208, 90415), (214, 87880), (260, 72332), (338, 55640), (428, 43940), (520, 36166), (535, 35152), (676, 27820), (845, 22256), (856, 21970), (1040, 18083), (1070, 17576), (1352, 13910), (1391, 13520), (1690, 11128), (1712, 10985), (2140, 8788), (2197, 8560), (2704, 6955), (2782, 6760), (3380, 5564), (4280, 4394)]