21979854

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:170

約数の個数: 96

約数和(自身を含む): 55036800

約数和(自身を除く): 33056946

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 29, 39, 41, 58, 78, 79, 82, 87, 117, 123, 158, 174, 234, 237, 246, 261, 369, 377, 474, 522, 533, 711, 738, 754, 1027, 1066, 1131, 1189, 1422, 1599, 2054, 2262, 2291, 2378, 3081, 3198, 3239, 3393, 3567, 4582, 4797, 6162, 6478, 6786, 6873, 7134, 9243, 9594, 9717, 10701, 13746, 15457, 18486, 19434, 20619, 21402, 29151, 29783, 30914, 41238, 42107, 46371, 58302, 59566, 84214, 89349, 92742, 93931, 126321, 139113, 178698, 187862, 252642, 268047, 278226, 281793, 378963, 536094, 563586, 757926, 845379, 1221103, 1690758, 2442206, 3663309, 7326618, 10989927, 21979854]

約数ペア:

[(1, 21979854), (2, 10989927), (3, 7326618), (6, 3663309), (9, 2442206), (13, 1690758), (18, 1221103), (26, 845379), (29, 757926), (39, 563586), (41, 536094), (58, 378963), (78, 281793), (79, 278226), (82, 268047), (87, 252642), (117, 187862), (123, 178698), (158, 139113), (174, 126321), (234, 93931), (237, 92742), (246, 89349), (261, 84214), (369, 59566), (377, 58302), (474, 46371), (522, 42107), (533, 41238), (711, 30914), (738, 29783), (754, 29151), (1027, 21402), (1066, 20619), (1131, 19434), (1189, 18486), (1422, 15457), (1599, 13746), (2054, 10701), (2262, 9717), (2291, 9594), (2378, 9243), (3081, 7134), (3198, 6873), (3239, 6786), (3393, 6478), (3567, 6162), (4582, 4797)]