128958760

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{179}}^1$

素因数の和:311

約数の個数: 128

約数和(自身を含む): 348364800

約数和(自身を除く): 219406040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 83, 124, 140, 155, 166, 179, 217, 248, 280, 310, 332, 358, 415, 434, 581, 620, 664, 716, 830, 868, 895, 1085, 1162, 1240, 1253, 1432, 1660, 1736, 1790, 2170, 2324, 2506, 2573, 2905, 3320, 3580, 4340, 4648, 5012, 5146, 5549, 5810, 6265, 7160, 8680, 10024, 10292, 11098, 11620, 12530, 12865, 14857, 18011, 20584, 22196, 23240, 25060, 25730, 27745, 29714, 36022, 38843, 44392, 50120, 51460, 55490, 59428, 72044, 74285, 77686, 90055, 102920, 103999, 110980, 118856, 144088, 148570, 155372, 180110, 194215, 207998, 221960, 297140, 310744, 360220, 388430, 415996, 460567, 519995, 594280, 720440, 776860, 831992, 921134, 1039990, 1553720, 1842268, 2079980, 2302835, 3223969, 3684536, 4159960, 4605670, 6447938, 9211340, 12895876, 16119845, 18422680, 25791752, 32239690, 64479380, 128958760]

約数ペア:

[(1, 128958760), (2, 64479380), (4, 32239690), (5, 25791752), (7, 18422680), (8, 16119845), (10, 12895876), (14, 9211340), (20, 6447938), (28, 4605670), (31, 4159960), (35, 3684536), (40, 3223969), (56, 2302835), (62, 2079980), (70, 1842268), (83, 1553720), (124, 1039990), (140, 921134), (155, 831992), (166, 776860), (179, 720440), (217, 594280), (248, 519995), (280, 460567), (310, 415996), (332, 388430), (358, 360220), (415, 310744), (434, 297140), (581, 221960), (620, 207998), (664, 194215), (716, 180110), (830, 155372), (868, 148570), (895, 144088), (1085, 118856), (1162, 110980), (1240, 103999), (1253, 102920), (1432, 90055), (1660, 77686), (1736, 74285), (1790, 72044), (2170, 59428), (2324, 55490), (2506, 51460), (2573, 50120), (2905, 44392), (3320, 38843), (3580, 36022), (4340, 29714), (4648, 27745), (5012, 25730), (5146, 25060), (5549, 23240), (5810, 22196), (6265, 20584), (7160, 18011), (8680, 14857), (10024, 12865), (10292, 12530), (11098, 11620)]