19989216

素因数分解:

$2^5\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{281}}^1$

素因数の和:329

約数の個数: 144

約数和(自身を含む): 64668240

約数和(自身を除く): 44679024

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 19, 24, 26, 32, 36, 38, 39, 48, 52, 57, 72, 76, 78, 96, 104, 114, 117, 144, 152, 156, 171, 208, 228, 234, 247, 281, 288, 304, 312, 342, 416, 456, 468, 494, 562, 608, 624, 684, 741, 843, 912, 936, 988, 1124, 1248, 1368, 1482, 1686, 1824, 1872, 1976, 2223, 2248, 2529, 2736, 2964, 3372, 3653, 3744, 3952, 4446, 4496, 5058, 5339, 5472, 5928, 6744, 7306, 7904, 8892, 8992, 10116, 10678, 10959, 11856, 13488, 14612, 16017, 17784, 20232, 21356, 21918, 23712, 26976, 29224, 32034, 32877, 35568, 40464, 42712, 43836, 48051, 58448, 64068, 65754, 69407, 71136, 80928, 85424, 87672, 96102, 116896, 128136, 131508, 138814, 170848, 175344, 192204, 208221, 256272, 263016, 277628, 350688, 384408, 416442, 512544, 526032, 555256, 624663, 768816, 832884, 1052064, 1110512, 1249326, 1537632, 1665768, 2221024, 2498652, 3331536, 4997304, 6663072, 9994608, 19989216]

約数ペア:

[(1, 19989216), (2, 9994608), (3, 6663072), (4, 4997304), (6, 3331536), (8, 2498652), (9, 2221024), (12, 1665768), (13, 1537632), (16, 1249326), (18, 1110512), (19, 1052064), (24, 832884), (26, 768816), (32, 624663), (36, 555256), (38, 526032), (39, 512544), (48, 416442), (52, 384408), (57, 350688), (72, 277628), (76, 263016), (78, 256272), (96, 208221), (104, 192204), (114, 175344), (117, 170848), (144, 138814), (152, 131508), (156, 128136), (171, 116896), (208, 96102), (228, 87672), (234, 85424), (247, 80928), (281, 71136), (288, 69407), (304, 65754), (312, 64068), (342, 58448), (416, 48051), (456, 43836), (468, 42712), (494, 40464), (562, 35568), (608, 32877), (624, 32034), (684, 29224), (741, 26976), (843, 23712), (912, 21918), (936, 21356), (988, 20232), (1124, 17784), (1248, 16017), (1368, 14612), (1482, 13488), (1686, 11856), (1824, 10959), (1872, 10678), (1976, 10116), (2223, 8992), (2248, 8892), (2529, 7904), (2736, 7306), (2964, 6744), (3372, 5928), (3653, 5472), (3744, 5339), (3952, 5058), (4446, 4496)]