398412976

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{1381}}^1$

素因数の和:1494

約数の個数: 80

約数和(自身を含む): 887686240

約数和(自身を除く): 489273264

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 73, 76, 104, 146, 152, 208, 247, 292, 304, 494, 584, 949, 988, 1168, 1381, 1387, 1898, 1976, 2762, 2774, 3796, 3952, 5524, 5548, 7592, 11048, 11096, 15184, 17953, 18031, 22096, 22192, 26239, 35906, 36062, 52478, 71812, 72124, 100813, 104956, 143624, 144248, 201626, 209912, 287248, 288496, 341107, 403252, 419824, 682214, 806504, 1310569, 1364428, 1613008, 1915447, 2621138, 2728856, 3830894, 5242276, 5457712, 7661788, 10484552, 15323576, 20969104, 24900811, 30647152, 49801622, 99603244, 199206488, 398412976]

約数ペア:

[(1, 398412976), (2, 199206488), (4, 99603244), (8, 49801622), (13, 30647152), (16, 24900811), (19, 20969104), (26, 15323576), (38, 10484552), (52, 7661788), (73, 5457712), (76, 5242276), (104, 3830894), (146, 2728856), (152, 2621138), (208, 1915447), (247, 1613008), (292, 1364428), (304, 1310569), (494, 806504), (584, 682214), (949, 419824), (988, 403252), (1168, 341107), (1381, 288496), (1387, 287248), (1898, 209912), (1976, 201626), (2762, 144248), (2774, 143624), (3796, 104956), (3952, 100813), (5524, 72124), (5548, 71812), (7592, 52478), (11048, 36062), (11096, 35906), (15184, 26239), (17953, 22192), (18031, 22096)]