18511844

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{487}}^1$

素因数の和:564

約数の個数: 48

約数和(自身を含む): 37876608

約数和(自身を除く): 19364764

約数列:

[1, 2, 4, 13, 17, 26, 34, 43, 52, 68, 86, 172, 221, 442, 487, 559, 731, 884, 974, 1118, 1462, 1948, 2236, 2924, 6331, 8279, 9503, 12662, 16558, 19006, 20941, 25324, 33116, 38012, 41882, 83764, 107627, 215254, 272233, 355997, 430508, 544466, 711994, 1088932, 1423988, 4627961, 9255922, 18511844]

約数ペア:

[(1, 18511844), (2, 9255922), (4, 4627961), (13, 1423988), (17, 1088932), (26, 711994), (34, 544466), (43, 430508), (52, 355997), (68, 272233), (86, 215254), (172, 107627), (221, 83764), (442, 41882), (487, 38012), (559, 33116), (731, 25324), (884, 20941), (974, 19006), (1118, 16558), (1462, 12662), (1948, 9503), (2236, 8279), (2924, 6331)]