18972460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1697}}^1$

素因数の和:1762

約数の個数: 48

約数和(自身を含む): 43930656

約数和(自身を除く): 24958196

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 172, 215, 260, 430, 559, 860, 1118, 1697, 2236, 2795, 3394, 5590, 6788, 8485, 11180, 16970, 22061, 33940, 44122, 72971, 88244, 110305, 145942, 220610, 291884, 364855, 441220, 729710, 948623, 1459420, 1897246, 3794492, 4743115, 9486230, 18972460]

約数ペア:

[(1, 18972460), (2, 9486230), (4, 4743115), (5, 3794492), (10, 1897246), (13, 1459420), (20, 948623), (26, 729710), (43, 441220), (52, 364855), (65, 291884), (86, 220610), (130, 145942), (172, 110305), (215, 88244), (260, 72971), (430, 44122), (559, 33940), (860, 22061), (1118, 16970), (1697, 11180), (2236, 8485), (2795, 6788), (3394, 5590)]