128857680

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{691}}^1$

素因数の和:754

約数の個数: 240

約数和(自身を含む): 508669824

約数和(自身を除く): 379812144

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 37, 40, 42, 45, 48, 56, 60, 63, 70, 72, 74, 80, 84, 90, 105, 111, 112, 120, 126, 140, 144, 148, 168, 180, 185, 210, 222, 240, 252, 259, 280, 296, 315, 333, 336, 360, 370, 420, 444, 504, 518, 555, 560, 592, 630, 666, 691, 720, 740, 777, 840, 888, 1008, 1036, 1110, 1260, 1295, 1332, 1382, 1480, 1554, 1665, 1680, 1776, 2072, 2073, 2220, 2331, 2520, 2590, 2664, 2764, 2960, 3108, 3330, 3455, 3885, 4144, 4146, 4440, 4662, 4837, 5040, 5180, 5328, 5528, 6216, 6219, 6660, 6910, 7770, 8292, 8880, 9324, 9674, 10360, 10365, 11056, 11655, 12432, 12438, 13320, 13820, 14511, 15540, 16584, 18648, 19348, 20720, 20730, 23310, 24185, 24876, 25567, 26640, 27640, 29022, 31080, 31095, 33168, 37296, 38696, 41460, 43533, 46620, 48370, 49752, 51134, 55280, 58044, 62160, 62190, 72555, 76701, 77392, 82920, 87066, 93240, 96740, 99504, 102268, 116088, 124380, 127835, 145110, 153402, 165840, 174132, 178969, 186480, 193480, 204536, 217665, 230103, 232176, 248760, 255670, 290220, 306804, 348264, 357938, 383505, 386960, 409072, 435330, 460206, 497520, 511340, 536907, 580440, 613608, 696528, 715876, 767010, 870660, 894845, 920412, 1022680, 1073814, 1150515, 1160880, 1227216, 1431752, 1534020, 1610721, 1741320, 1789690, 1840824, 2045360, 2147628, 2301030, 2684535, 2863504, 3068040, 3221442, 3482640, 3579380, 3681648, 4295256, 4602060, 5369070, 6136080, 6442884, 7158760, 8053605, 8590512, 9204120, 10738140, 12885768, 14317520, 16107210, 18408240, 21476280, 25771536, 32214420, 42952560, 64428840, 128857680]

約数ペア:

[(1, 128857680), (2, 64428840), (3, 42952560), (4, 32214420), (5, 25771536), (6, 21476280), (7, 18408240), (8, 16107210), (9, 14317520), (10, 12885768), (12, 10738140), (14, 9204120), (15, 8590512), (16, 8053605), (18, 7158760), (20, 6442884), (21, 6136080), (24, 5369070), (28, 4602060), (30, 4295256), (35, 3681648), (36, 3579380), (37, 3482640), (40, 3221442), (42, 3068040), (45, 2863504), (48, 2684535), (56, 2301030), (60, 2147628), (63, 2045360), (70, 1840824), (72, 1789690), (74, 1741320), (80, 1610721), (84, 1534020), (90, 1431752), (105, 1227216), (111, 1160880), (112, 1150515), (120, 1073814), (126, 1022680), (140, 920412), (144, 894845), (148, 870660), (168, 767010), (180, 715876), (185, 696528), (210, 613608), (222, 580440), (240, 536907), (252, 511340), (259, 497520), (280, 460206), (296, 435330), (315, 409072), (333, 386960), (336, 383505), (360, 357938), (370, 348264), (420, 306804), (444, 290220), (504, 255670), (518, 248760), (555, 232176), (560, 230103), (592, 217665), (630, 204536), (666, 193480), (691, 186480), (720, 178969), (740, 174132), (777, 165840), (840, 153402), (888, 145110), (1008, 127835), (1036, 124380), (1110, 116088), (1260, 102268), (1295, 99504), (1332, 96740), (1382, 93240), (1480, 87066), (1554, 82920), (1665, 77392), (1680, 76701), (1776, 72555), (2072, 62190), (2073, 62160), (2220, 58044), (2331, 55280), (2520, 51134), (2590, 49752), (2664, 48370), (2764, 46620), (2960, 43533), (3108, 41460), (3330, 38696), (3455, 37296), (3885, 33168), (4144, 31095), (4146, 31080), (4440, 29022), (4662, 27640), (4837, 26640), (5040, 25567), (5180, 24876), (5328, 24185), (5528, 23310), (6216, 20730), (6219, 20720), (6660, 19348), (6910, 18648), (7770, 16584), (8292, 15540), (8880, 14511), (9324, 13820), (9674, 13320), (10360, 12438), (10365, 12432), (11056, 11655)]