19945140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{149}}^1$

素因数の和:281

約数の個数: 96

約数和(自身を含む): 59270400

約数和(自身を除く): 39325260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 97, 115, 138, 149, 194, 230, 276, 291, 298, 345, 388, 447, 460, 485, 582, 596, 690, 745, 894, 970, 1164, 1380, 1455, 1490, 1788, 1940, 2231, 2235, 2910, 2980, 3427, 4462, 4470, 5820, 6693, 6854, 8924, 8940, 10281, 11155, 13386, 13708, 14453, 17135, 20562, 22310, 26772, 28906, 33465, 34270, 41124, 43359, 44620, 51405, 57812, 66930, 68540, 72265, 86718, 102810, 133860, 144530, 173436, 205620, 216795, 289060, 332419, 433590, 664838, 867180, 997257, 1329676, 1662095, 1994514, 3324190, 3989028, 4986285, 6648380, 9972570, 19945140]

約数ペア:

[(1, 19945140), (2, 9972570), (3, 6648380), (4, 4986285), (5, 3989028), (6, 3324190), (10, 1994514), (12, 1662095), (15, 1329676), (20, 997257), (23, 867180), (30, 664838), (46, 433590), (60, 332419), (69, 289060), (92, 216795), (97, 205620), (115, 173436), (138, 144530), (149, 133860), (194, 102810), (230, 86718), (276, 72265), (291, 68540), (298, 66930), (345, 57812), (388, 51405), (447, 44620), (460, 43359), (485, 41124), (582, 34270), (596, 33465), (690, 28906), (745, 26772), (894, 22310), (970, 20562), (1164, 17135), (1380, 14453), (1455, 13708), (1490, 13386), (1788, 11155), (1940, 10281), (2231, 8940), (2235, 8924), (2910, 6854), (2980, 6693), (3427, 5820), (4462, 4470)]