199921520

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{179}}^1\times {\mathrm{607}}^1$

素因数の和:822

約数の個数: 80

約数和(自身を含む): 488540160

約数和(自身を除く): 288618640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 179, 184, 230, 358, 368, 460, 607, 716, 895, 920, 1214, 1432, 1790, 1840, 2428, 2864, 3035, 3580, 4117, 4856, 6070, 7160, 8234, 9712, 12140, 13961, 14320, 16468, 20585, 24280, 27922, 32936, 41170, 48560, 55844, 65872, 69805, 82340, 108653, 111688, 139610, 164680, 217306, 223376, 279220, 329360, 434612, 543265, 558440, 869224, 1086530, 1116880, 1738448, 2173060, 2499019, 4346120, 4998038, 8692240, 9996076, 12495095, 19992152, 24990190, 39984304, 49980380, 99960760, 199921520]

約数ペア:

[(1, 199921520), (2, 99960760), (4, 49980380), (5, 39984304), (8, 24990190), (10, 19992152), (16, 12495095), (20, 9996076), (23, 8692240), (40, 4998038), (46, 4346120), (80, 2499019), (92, 2173060), (115, 1738448), (179, 1116880), (184, 1086530), (230, 869224), (358, 558440), (368, 543265), (460, 434612), (607, 329360), (716, 279220), (895, 223376), (920, 217306), (1214, 164680), (1432, 139610), (1790, 111688), (1840, 108653), (2428, 82340), (2864, 69805), (3035, 65872), (3580, 55844), (4117, 48560), (4856, 41170), (6070, 32936), (7160, 27922), (8234, 24280), (9712, 20585), (12140, 16468), (13961, 14320)]