81447080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{491}}^1$

素因数の和:555

約数の個数: 128

約数和(自身を含む): 223171200

約数和(自身を除く): 141724120

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 29, 40, 44, 52, 55, 58, 65, 88, 104, 110, 116, 130, 143, 145, 220, 232, 260, 286, 290, 319, 377, 440, 491, 520, 572, 580, 638, 715, 754, 982, 1144, 1160, 1276, 1430, 1508, 1595, 1885, 1964, 2455, 2552, 2860, 3016, 3190, 3770, 3928, 4147, 4910, 5401, 5720, 6380, 6383, 7540, 8294, 9820, 10802, 12760, 12766, 14239, 15080, 16588, 19640, 20735, 21604, 25532, 27005, 28478, 31915, 33176, 41470, 43208, 51064, 54010, 56956, 63830, 70213, 71195, 82940, 108020, 113912, 127660, 140426, 142390, 156629, 165880, 185107, 216040, 255320, 280852, 284780, 313258, 351065, 370214, 561704, 569560, 626516, 702130, 740428, 783145, 925535, 1253032, 1404260, 1480856, 1566290, 1851070, 2036177, 2808520, 3132580, 3702140, 4072354, 6265160, 7404280, 8144708, 10180885, 16289416, 20361770, 40723540, 81447080]

約数ペア:

[(1, 81447080), (2, 40723540), (4, 20361770), (5, 16289416), (8, 10180885), (10, 8144708), (11, 7404280), (13, 6265160), (20, 4072354), (22, 3702140), (26, 3132580), (29, 2808520), (40, 2036177), (44, 1851070), (52, 1566290), (55, 1480856), (58, 1404260), (65, 1253032), (88, 925535), (104, 783145), (110, 740428), (116, 702130), (130, 626516), (143, 569560), (145, 561704), (220, 370214), (232, 351065), (260, 313258), (286, 284780), (290, 280852), (319, 255320), (377, 216040), (440, 185107), (491, 165880), (520, 156629), (572, 142390), (580, 140426), (638, 127660), (715, 113912), (754, 108020), (982, 82940), (1144, 71195), (1160, 70213), (1276, 63830), (1430, 56956), (1508, 54010), (1595, 51064), (1885, 43208), (1964, 41470), (2455, 33176), (2552, 31915), (2860, 28478), (3016, 27005), (3190, 25532), (3770, 21604), (3928, 20735), (4147, 19640), (4910, 16588), (5401, 15080), (5720, 14239), (6380, 12766), (6383, 12760), (7540, 10802), (8294, 9820)]