19981104

素因数分解:

$2^4\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:147

約数の個数: 160

約数和(自身を含む): 62995968

約数和(自身を除く): 43014864

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 13, 16, 22, 24, 26, 33, 39, 41, 44, 48, 52, 66, 71, 78, 82, 88, 104, 123, 132, 142, 143, 156, 164, 176, 208, 213, 246, 264, 284, 286, 312, 328, 426, 429, 451, 492, 528, 533, 568, 572, 624, 656, 781, 852, 858, 902, 923, 984, 1066, 1136, 1144, 1353, 1562, 1599, 1704, 1716, 1804, 1846, 1968, 2132, 2288, 2343, 2706, 2769, 2911, 3124, 3198, 3408, 3432, 3608, 3692, 4264, 4686, 5412, 5538, 5822, 5863, 6248, 6396, 6864, 7216, 7384, 8528, 8733, 9372, 10153, 10824, 11076, 11644, 11726, 12496, 12792, 14768, 17466, 17589, 18744, 20306, 21648, 22152, 23288, 23452, 25584, 30459, 32021, 34932, 35178, 37488, 37843, 40612, 44304, 46576, 46904, 60918, 64042, 69864, 70356, 75686, 81224, 93808, 96063, 113529, 121836, 128084, 139728, 140712, 151372, 162448, 192126, 227058, 243672, 256168, 281424, 302744, 384252, 416273, 454116, 487344, 512336, 605488, 768504, 832546, 908232, 1248819, 1537008, 1665092, 1816464, 2497638, 3330184, 4995276, 6660368, 9990552, 19981104]

約数ペア:

[(1, 19981104), (2, 9990552), (3, 6660368), (4, 4995276), (6, 3330184), (8, 2497638), (11, 1816464), (12, 1665092), (13, 1537008), (16, 1248819), (22, 908232), (24, 832546), (26, 768504), (33, 605488), (39, 512336), (41, 487344), (44, 454116), (48, 416273), (52, 384252), (66, 302744), (71, 281424), (78, 256168), (82, 243672), (88, 227058), (104, 192126), (123, 162448), (132, 151372), (142, 140712), (143, 139728), (156, 128084), (164, 121836), (176, 113529), (208, 96063), (213, 93808), (246, 81224), (264, 75686), (284, 70356), (286, 69864), (312, 64042), (328, 60918), (426, 46904), (429, 46576), (451, 44304), (492, 40612), (528, 37843), (533, 37488), (568, 35178), (572, 34932), (624, 32021), (656, 30459), (781, 25584), (852, 23452), (858, 23288), (902, 22152), (923, 21648), (984, 20306), (1066, 18744), (1136, 17589), (1144, 17466), (1353, 14768), (1562, 12792), (1599, 12496), (1704, 11726), (1716, 11644), (1804, 11076), (1846, 10824), (1968, 10153), (2132, 9372), (2288, 8733), (2343, 8528), (2706, 7384), (2769, 7216), (2911, 6864), (3124, 6396), (3198, 6248), (3408, 5863), (3432, 5822), (3608, 5538), (3692, 5412), (4264, 4686)]