81752320

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^3$

素因数の和:85

約数の個数: 144

約数和(自身を含む): 224063280

約数和(自身を除く): 142310960

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 32, 34, 40, 52, 64, 65, 68, 80, 85, 104, 128, 130, 136, 160, 170, 208, 221, 256, 260, 272, 289, 320, 340, 416, 442, 520, 544, 578, 640, 680, 832, 884, 1040, 1088, 1105, 1156, 1280, 1360, 1445, 1664, 1768, 2080, 2176, 2210, 2312, 2720, 2890, 3328, 3536, 3757, 4160, 4352, 4420, 4624, 4913, 5440, 5780, 7072, 7514, 8320, 8840, 9248, 9826, 10880, 11560, 14144, 15028, 16640, 17680, 18496, 18785, 19652, 21760, 23120, 24565, 28288, 30056, 35360, 36992, 37570, 39304, 46240, 49130, 56576, 60112, 63869, 70720, 73984, 75140, 78608, 92480, 98260, 120224, 127738, 141440, 150280, 157216, 184960, 196520, 240448, 255476, 282880, 300560, 314432, 319345, 369920, 393040, 480896, 510952, 601120, 628864, 638690, 786080, 961792, 1021904, 1202240, 1257728, 1277380, 1572160, 2043808, 2404480, 2554760, 3144320, 4087616, 4808960, 5109520, 6288640, 8175232, 10219040, 16350464, 20438080, 40876160, 81752320]

約数ペア:

[(1, 81752320), (2, 40876160), (4, 20438080), (5, 16350464), (8, 10219040), (10, 8175232), (13, 6288640), (16, 5109520), (17, 4808960), (20, 4087616), (26, 3144320), (32, 2554760), (34, 2404480), (40, 2043808), (52, 1572160), (64, 1277380), (65, 1257728), (68, 1202240), (80, 1021904), (85, 961792), (104, 786080), (128, 638690), (130, 628864), (136, 601120), (160, 510952), (170, 480896), (208, 393040), (221, 369920), (256, 319345), (260, 314432), (272, 300560), (289, 282880), (320, 255476), (340, 240448), (416, 196520), (442, 184960), (520, 157216), (544, 150280), (578, 141440), (640, 127738), (680, 120224), (832, 98260), (884, 92480), (1040, 78608), (1088, 75140), (1105, 73984), (1156, 70720), (1280, 63869), (1360, 60112), (1445, 56576), (1664, 49130), (1768, 46240), (2080, 39304), (2176, 37570), (2210, 36992), (2312, 35360), (2720, 30056), (2890, 28288), (3328, 24565), (3536, 23120), (3757, 21760), (4160, 19652), (4352, 18785), (4420, 18496), (4624, 17680), (4913, 16640), (5440, 15028), (5780, 14144), (7072, 11560), (7514, 10880), (8320, 9826), (8840, 9248)]