291247720

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:227

約数の個数: 128

約数和(自身を含む): 709171200

約数和(自身を除く): 417923480

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 47, 53, 74, 79, 94, 106, 148, 158, 185, 188, 212, 235, 265, 296, 316, 370, 376, 395, 424, 470, 530, 632, 740, 790, 940, 1060, 1480, 1580, 1739, 1880, 1961, 2120, 2491, 2923, 3160, 3478, 3713, 3922, 4187, 4982, 5846, 6956, 7426, 7844, 8374, 8695, 9805, 9964, 11692, 12455, 13912, 14615, 14852, 15688, 16748, 17390, 18565, 19610, 19928, 20935, 23384, 24910, 29230, 29704, 33496, 34780, 37130, 39220, 41870, 49820, 58460, 69560, 74260, 78440, 83740, 92167, 99640, 116920, 137381, 148520, 154919, 167480, 184334, 196789, 274762, 309838, 368668, 393578, 460835, 549524, 619676, 686905, 737336, 774595, 787156, 921670, 983945, 1099048, 1239352, 1373810, 1549190, 1574312, 1843340, 1967890, 2747620, 3098380, 3686680, 3935780, 5495240, 6196760, 7281193, 7871560, 14562386, 29124772, 36405965, 58249544, 72811930, 145623860, 291247720]

約数ペア:

[(1, 291247720), (2, 145623860), (4, 72811930), (5, 58249544), (8, 36405965), (10, 29124772), (20, 14562386), (37, 7871560), (40, 7281193), (47, 6196760), (53, 5495240), (74, 3935780), (79, 3686680), (94, 3098380), (106, 2747620), (148, 1967890), (158, 1843340), (185, 1574312), (188, 1549190), (212, 1373810), (235, 1239352), (265, 1099048), (296, 983945), (316, 921670), (370, 787156), (376, 774595), (395, 737336), (424, 686905), (470, 619676), (530, 549524), (632, 460835), (740, 393578), (790, 368668), (940, 309838), (1060, 274762), (1480, 196789), (1580, 184334), (1739, 167480), (1880, 154919), (1961, 148520), (2120, 137381), (2491, 116920), (2923, 99640), (3160, 92167), (3478, 83740), (3713, 78440), (3922, 74260), (4187, 69560), (4982, 58460), (5846, 49820), (6956, 41870), (7426, 39220), (7844, 37130), (8374, 34780), (8695, 33496), (9805, 29704), (9964, 29230), (11692, 24910), (12455, 23384), (13912, 20935), (14615, 19928), (14852, 19610), (15688, 18565), (16748, 17390)]