19990128

素因数分解:

$2^4\times 3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{953}}^1$

素因数の和:1006

約数の個数: 80

約数和(自身を含む): 56782080

約数和(自身を除く): 36791952

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 19, 23, 24, 38, 46, 48, 57, 69, 76, 92, 114, 138, 152, 184, 228, 276, 304, 368, 437, 456, 552, 874, 912, 953, 1104, 1311, 1748, 1906, 2622, 2859, 3496, 3812, 5244, 5718, 6992, 7624, 10488, 11436, 15248, 18107, 20976, 21919, 22872, 36214, 43838, 45744, 54321, 65757, 72428, 87676, 108642, 131514, 144856, 175352, 217284, 263028, 289712, 350704, 416461, 434568, 526056, 832922, 869136, 1052112, 1249383, 1665844, 2498766, 3331688, 4997532, 6663376, 9995064, 19990128]

約数ペア:

[(1, 19990128), (2, 9995064), (3, 6663376), (4, 4997532), (6, 3331688), (8, 2498766), (12, 1665844), (16, 1249383), (19, 1052112), (23, 869136), (24, 832922), (38, 526056), (46, 434568), (48, 416461), (57, 350704), (69, 289712), (76, 263028), (92, 217284), (114, 175352), (138, 144856), (152, 131514), (184, 108642), (228, 87676), (276, 72428), (304, 65757), (368, 54321), (437, 45744), (456, 43838), (552, 36214), (874, 22872), (912, 21919), (953, 20976), (1104, 18107), (1311, 15248), (1748, 11436), (1906, 10488), (2622, 7624), (2859, 6992), (3496, 5718), (3812, 5244)]