128656640

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{173}}^1$

素因数の和:284

約数の個数: 144

約数和(自身を含む): 358501248

約数和(自身を除く): 229844608

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 83, 112, 128, 140, 160, 166, 173, 224, 256, 280, 320, 332, 346, 415, 448, 560, 581, 640, 664, 692, 830, 865, 896, 1120, 1162, 1211, 1280, 1328, 1384, 1660, 1730, 1792, 2240, 2324, 2422, 2656, 2768, 2905, 3320, 3460, 4480, 4648, 4844, 5312, 5536, 5810, 6055, 6640, 6920, 8960, 9296, 9688, 10624, 11072, 11620, 12110, 13280, 13840, 14359, 18592, 19376, 21248, 22144, 23240, 24220, 26560, 27680, 28718, 37184, 38752, 44288, 46480, 48440, 53120, 55360, 57436, 71795, 74368, 77504, 92960, 96880, 100513, 106240, 110720, 114872, 143590, 148736, 155008, 185920, 193760, 201026, 221440, 229744, 287180, 310016, 371840, 387520, 402052, 459488, 502565, 574360, 743680, 775040, 804104, 918976, 1005130, 1148720, 1550080, 1608208, 1837952, 2010260, 2297440, 3216416, 3675904, 4020520, 4594880, 6432832, 8041040, 9189760, 12865664, 16082080, 18379520, 25731328, 32164160, 64328320, 128656640]

約数ペア:

[(1, 128656640), (2, 64328320), (4, 32164160), (5, 25731328), (7, 18379520), (8, 16082080), (10, 12865664), (14, 9189760), (16, 8041040), (20, 6432832), (28, 4594880), (32, 4020520), (35, 3675904), (40, 3216416), (56, 2297440), (64, 2010260), (70, 1837952), (80, 1608208), (83, 1550080), (112, 1148720), (128, 1005130), (140, 918976), (160, 804104), (166, 775040), (173, 743680), (224, 574360), (256, 502565), (280, 459488), (320, 402052), (332, 387520), (346, 371840), (415, 310016), (448, 287180), (560, 229744), (581, 221440), (640, 201026), (664, 193760), (692, 185920), (830, 155008), (865, 148736), (896, 143590), (1120, 114872), (1162, 110720), (1211, 106240), (1280, 100513), (1328, 96880), (1384, 92960), (1660, 77504), (1730, 74368), (1792, 71795), (2240, 57436), (2324, 55360), (2422, 53120), (2656, 48440), (2768, 46480), (2905, 44288), (3320, 38752), (3460, 37184), (4480, 28718), (4648, 27680), (4844, 26560), (5312, 24220), (5536, 23240), (5810, 22144), (6055, 21248), (6640, 19376), (6920, 18592), (8960, 14359), (9296, 13840), (9688, 13280), (10624, 12110), (11072, 11620)]