19999616

素因数分解:

$2^7\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1$

素因数の和:152

約数の個数: 128

約数和(自身を含む): 52436160

約数和(自身を除く): 32436544

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 17, 26, 28, 32, 34, 52, 56, 64, 68, 91, 101, 104, 112, 119, 128, 136, 182, 202, 208, 221, 224, 238, 272, 364, 404, 416, 442, 448, 476, 544, 707, 728, 808, 832, 884, 896, 952, 1088, 1313, 1414, 1456, 1547, 1616, 1664, 1717, 1768, 1904, 2176, 2626, 2828, 2912, 3094, 3232, 3434, 3536, 3808, 5252, 5656, 5824, 6188, 6464, 6868, 7072, 7616, 9191, 10504, 11312, 11648, 12019, 12376, 12928, 13736, 14144, 15232, 18382, 21008, 22321, 22624, 24038, 24752, 27472, 28288, 36764, 42016, 44642, 45248, 48076, 49504, 54944, 73528, 84032, 89284, 90496, 96152, 99008, 109888, 147056, 156247, 168064, 178568, 192304, 198016, 219776, 294112, 312494, 357136, 384608, 588224, 624988, 714272, 769216, 1176448, 1249976, 1428544, 1538432, 2499952, 2857088, 4999904, 9999808, 19999616]

約数ペア:

[(1, 19999616), (2, 9999808), (4, 4999904), (7, 2857088), (8, 2499952), (13, 1538432), (14, 1428544), (16, 1249976), (17, 1176448), (26, 769216), (28, 714272), (32, 624988), (34, 588224), (52, 384608), (56, 357136), (64, 312494), (68, 294112), (91, 219776), (101, 198016), (104, 192304), (112, 178568), (119, 168064), (128, 156247), (136, 147056), (182, 109888), (202, 99008), (208, 96152), (221, 90496), (224, 89284), (238, 84032), (272, 73528), (364, 54944), (404, 49504), (416, 48076), (442, 45248), (448, 44642), (476, 42016), (544, 36764), (707, 28288), (728, 27472), (808, 24752), (832, 24038), (884, 22624), (896, 22321), (952, 21008), (1088, 18382), (1313, 15232), (1414, 14144), (1456, 13736), (1547, 12928), (1616, 12376), (1664, 12019), (1717, 11648), (1768, 11312), (1904, 10504), (2176, 9191), (2626, 7616), (2828, 7072), (2912, 6868), (3094, 6464), (3232, 6188), (3434, 5824), (3536, 5656), (3808, 5252)]