81180400

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{367}}^1$

素因数の和:471

約数の個数: 120

約数和(自身を含む): 226334720

約数和(自身を除く): 145154320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 50, 56, 70, 79, 80, 100, 112, 140, 158, 175, 200, 280, 316, 350, 367, 395, 400, 553, 560, 632, 700, 734, 790, 1106, 1264, 1400, 1468, 1580, 1835, 1975, 2212, 2569, 2765, 2800, 2936, 3160, 3670, 3950, 4424, 5138, 5530, 5872, 6320, 7340, 7900, 8848, 9175, 10276, 11060, 12845, 13825, 14680, 15800, 18350, 20552, 22120, 25690, 27650, 28993, 29360, 31600, 36700, 41104, 44240, 51380, 55300, 57986, 64225, 73400, 102760, 110600, 115972, 128450, 144965, 146800, 202951, 205520, 221200, 231944, 256900, 289930, 405902, 463888, 513800, 579860, 724825, 811804, 1014755, 1027600, 1159720, 1449650, 1623608, 2029510, 2319440, 2899300, 3247216, 4059020, 5073775, 5798600, 8118040, 10147550, 11597200, 16236080, 20295100, 40590200, 81180400]

約数ペア:

[(1, 81180400), (2, 40590200), (4, 20295100), (5, 16236080), (7, 11597200), (8, 10147550), (10, 8118040), (14, 5798600), (16, 5073775), (20, 4059020), (25, 3247216), (28, 2899300), (35, 2319440), (40, 2029510), (50, 1623608), (56, 1449650), (70, 1159720), (79, 1027600), (80, 1014755), (100, 811804), (112, 724825), (140, 579860), (158, 513800), (175, 463888), (200, 405902), (280, 289930), (316, 256900), (350, 231944), (367, 221200), (395, 205520), (400, 202951), (553, 146800), (560, 144965), (632, 128450), (700, 115972), (734, 110600), (790, 102760), (1106, 73400), (1264, 64225), (1400, 57986), (1468, 55300), (1580, 51380), (1835, 44240), (1975, 41104), (2212, 36700), (2569, 31600), (2765, 29360), (2800, 28993), (2936, 27650), (3160, 25690), (3670, 22120), (3950, 20552), (4424, 18350), (5138, 15800), (5530, 14680), (5872, 13825), (6320, 12845), (7340, 11060), (7900, 10276), (8848, 9175)]