123809920

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{647}}^1$

素因数の和:702

約数の個数: 128

約数和(自身を含む): 333123840

約数和(自身を除く): 209313920

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 32, 40, 46, 52, 64, 65, 80, 92, 104, 115, 128, 130, 160, 184, 208, 230, 260, 299, 320, 368, 416, 460, 520, 598, 640, 647, 736, 832, 920, 1040, 1196, 1294, 1472, 1495, 1664, 1840, 2080, 2392, 2588, 2944, 2990, 3235, 3680, 4160, 4784, 5176, 5980, 6470, 7360, 8320, 8411, 9568, 10352, 11960, 12940, 14720, 14881, 16822, 19136, 20704, 23920, 25880, 29762, 33644, 38272, 41408, 42055, 47840, 51760, 59524, 67288, 74405, 82816, 84110, 95680, 103520, 119048, 134576, 148810, 168220, 191360, 193453, 207040, 238096, 269152, 297620, 336440, 386906, 414080, 476192, 538304, 595240, 672880, 773812, 952384, 967265, 1076608, 1190480, 1345760, 1547624, 1904768, 1934530, 2380960, 2691520, 3095248, 3869060, 4761920, 5383040, 6190496, 7738120, 9523840, 12380992, 15476240, 24761984, 30952480, 61904960, 123809920]

約数ペア:

[(1, 123809920), (2, 61904960), (4, 30952480), (5, 24761984), (8, 15476240), (10, 12380992), (13, 9523840), (16, 7738120), (20, 6190496), (23, 5383040), (26, 4761920), (32, 3869060), (40, 3095248), (46, 2691520), (52, 2380960), (64, 1934530), (65, 1904768), (80, 1547624), (92, 1345760), (104, 1190480), (115, 1076608), (128, 967265), (130, 952384), (160, 773812), (184, 672880), (208, 595240), (230, 538304), (260, 476192), (299, 414080), (320, 386906), (368, 336440), (416, 297620), (460, 269152), (520, 238096), (598, 207040), (640, 193453), (647, 191360), (736, 168220), (832, 148810), (920, 134576), (1040, 119048), (1196, 103520), (1294, 95680), (1472, 84110), (1495, 82816), (1664, 74405), (1840, 67288), (2080, 59524), (2392, 51760), (2588, 47840), (2944, 42055), (2990, 41408), (3235, 38272), (3680, 33644), (4160, 29762), (4784, 25880), (5176, 23920), (5980, 20704), (6470, 19136), (7360, 16822), (8320, 14881), (8411, 14720), (9568, 12940), (10352, 11960)]