19981494

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{5023}}^1$

素因数の和:5061

約数の個数: 48

約数和(自身を含む): 49375872

約数和(自身を除く): 29394378

約数列:

[1, 2, 3, 6, 9, 13, 17, 18, 26, 34, 39, 51, 78, 102, 117, 153, 221, 234, 306, 442, 663, 1326, 1989, 3978, 5023, 10046, 15069, 30138, 45207, 65299, 85391, 90414, 130598, 170782, 195897, 256173, 391794, 512346, 587691, 768519, 1110083, 1175382, 1537038, 2220166, 3330249, 6660498, 9990747, 19981494]

約数ペア:

[(1, 19981494), (2, 9990747), (3, 6660498), (6, 3330249), (9, 2220166), (13, 1537038), (17, 1175382), (18, 1110083), (26, 768519), (34, 587691), (39, 512346), (51, 391794), (78, 256173), (102, 195897), (117, 170782), (153, 130598), (221, 90414), (234, 85391), (306, 65299), (442, 45207), (663, 30138), (1326, 15069), (1989, 10046), (3978, 5023)]