20553516

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{199}}^1$

素因数の和:379

約数の個数: 72

約数和(自身を含む): 55328000

約数和(自身を除く): 34774484

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 151, 171, 199, 228, 302, 342, 398, 453, 597, 604, 684, 796, 906, 1194, 1359, 1791, 1812, 2388, 2718, 2869, 3582, 3781, 5436, 5738, 7164, 7562, 8607, 11343, 11476, 15124, 17214, 22686, 25821, 30049, 34029, 34428, 45372, 51642, 60098, 68058, 90147, 103284, 120196, 136116, 180294, 270441, 360588, 540882, 570931, 1081764, 1141862, 1712793, 2283724, 3425586, 5138379, 6851172, 10276758, 20553516]

約数ペア:

[(1, 20553516), (2, 10276758), (3, 6851172), (4, 5138379), (6, 3425586), (9, 2283724), (12, 1712793), (18, 1141862), (19, 1081764), (36, 570931), (38, 540882), (57, 360588), (76, 270441), (114, 180294), (151, 136116), (171, 120196), (199, 103284), (228, 90147), (302, 68058), (342, 60098), (398, 51642), (453, 45372), (597, 34428), (604, 34029), (684, 30049), (796, 25821), (906, 22686), (1194, 17214), (1359, 15124), (1791, 11476), (1812, 11343), (2388, 8607), (2718, 7562), (2869, 7164), (3582, 5738), (3781, 5436)]