647637440

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^2\times {\mathrm{47}}^1\times {\mathrm{149}}^1$

素因数の和:247

約数の個数: 168

約数和(自身を含む): 1684324800

約数和(自身を除く): 1036687360

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 47, 64, 68, 80, 85, 94, 136, 149, 160, 170, 188, 235, 272, 289, 298, 320, 340, 376, 470, 544, 578, 596, 680, 745, 752, 799, 940, 1088, 1156, 1192, 1360, 1445, 1490, 1504, 1598, 1880, 2312, 2384, 2533, 2720, 2890, 2980, 3008, 3196, 3760, 3995, 4624, 4768, 5066, 5440, 5780, 5960, 6392, 7003, 7520, 7990, 9248, 9536, 10132, 11560, 11920, 12665, 12784, 13583, 14006, 15040, 15980, 18496, 20264, 23120, 23840, 25330, 25568, 27166, 28012, 31960, 35015, 40528, 43061, 46240, 47680, 50660, 51136, 54332, 56024, 63920, 67915, 70030, 81056, 86122, 92480, 101320, 108664, 112048, 119051, 127840, 135830, 140060, 162112, 172244, 202640, 215305, 217328, 224096, 238102, 255680, 271660, 280120, 344488, 405280, 430610, 434656, 448192, 476204, 543320, 560240, 595255, 688976, 810560, 861220, 869312, 952408, 1086640, 1120480, 1190510, 1377952, 1722440, 1904816, 2023867, 2173280, 2240960, 2381020, 2755904, 3444880, 3809632, 4047734, 4346560, 4762040, 6889760, 7619264, 8095468, 9524080, 10119335, 13779520, 16190936, 19048160, 20238670, 32381872, 38096320, 40477340, 64763744, 80954680, 129527488, 161909360, 323818720, 647637440]

約数ペア:

[(1, 647637440), (2, 323818720), (4, 161909360), (5, 129527488), (8, 80954680), (10, 64763744), (16, 40477340), (17, 38096320), (20, 32381872), (32, 20238670), (34, 19048160), (40, 16190936), (47, 13779520), (64, 10119335), (68, 9524080), (80, 8095468), (85, 7619264), (94, 6889760), (136, 4762040), (149, 4346560), (160, 4047734), (170, 3809632), (188, 3444880), (235, 2755904), (272, 2381020), (289, 2240960), (298, 2173280), (320, 2023867), (340, 1904816), (376, 1722440), (470, 1377952), (544, 1190510), (578, 1120480), (596, 1086640), (680, 952408), (745, 869312), (752, 861220), (799, 810560), (940, 688976), (1088, 595255), (1156, 560240), (1192, 543320), (1360, 476204), (1445, 448192), (1490, 434656), (1504, 430610), (1598, 405280), (1880, 344488), (2312, 280120), (2384, 271660), (2533, 255680), (2720, 238102), (2890, 224096), (2980, 217328), (3008, 215305), (3196, 202640), (3760, 172244), (3995, 162112), (4624, 140060), (4768, 135830), (5066, 127840), (5440, 119051), (5780, 112048), (5960, 108664), (6392, 101320), (7003, 92480), (7520, 86122), (7990, 81056), (9248, 70030), (9536, 67915), (10132, 63920), (11560, 56024), (11920, 54332), (12665, 51136), (12784, 50660), (13583, 47680), (14006, 46240), (15040, 43061), (15980, 40528), (18496, 35015), (20264, 31960), (23120, 28012), (23840, 27166), (25330, 25568)]