19994992

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:170

約数の個数: 80

約数和(自身を含む): 44595360

約数和(自身を除く): 24600368

約数列:

[1, 2, 4, 8, 16, 17, 19, 34, 38, 53, 68, 73, 76, 106, 136, 146, 152, 212, 272, 292, 304, 323, 424, 584, 646, 848, 901, 1007, 1168, 1241, 1292, 1387, 1802, 2014, 2482, 2584, 2774, 3604, 3869, 4028, 4964, 5168, 5548, 7208, 7738, 8056, 9928, 11096, 14416, 15476, 16112, 17119, 19856, 22192, 23579, 30952, 34238, 47158, 61904, 65773, 68476, 73511, 94316, 131546, 136952, 147022, 188632, 263092, 273904, 294044, 377264, 526184, 588088, 1052368, 1176176, 1249687, 2499374, 4998748, 9997496, 19994992]

約数ペア:

[(1, 19994992), (2, 9997496), (4, 4998748), (8, 2499374), (16, 1249687), (17, 1176176), (19, 1052368), (34, 588088), (38, 526184), (53, 377264), (68, 294044), (73, 273904), (76, 263092), (106, 188632), (136, 147022), (146, 136952), (152, 131546), (212, 94316), (272, 73511), (292, 68476), (304, 65773), (323, 61904), (424, 47158), (584, 34238), (646, 30952), (848, 23579), (901, 22192), (1007, 19856), (1168, 17119), (1241, 16112), (1292, 15476), (1387, 14416), (1802, 11096), (2014, 9928), (2482, 8056), (2584, 7738), (2774, 7208), (3604, 5548), (3869, 5168), (4028, 4964)]