81189680

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{151}}^1$

素因数の和:235

約数の個数: 160

約数和(自身を含む): 227985408

約数和(自身を除く): 146795728

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 40, 44, 47, 52, 55, 65, 80, 88, 94, 104, 110, 130, 143, 151, 176, 188, 208, 220, 235, 260, 286, 302, 376, 440, 470, 517, 520, 572, 604, 611, 715, 752, 755, 880, 940, 1034, 1040, 1144, 1208, 1222, 1430, 1510, 1661, 1880, 1963, 2068, 2288, 2416, 2444, 2585, 2860, 3020, 3055, 3322, 3760, 3926, 4136, 4888, 5170, 5720, 6040, 6110, 6644, 6721, 7097, 7852, 8272, 8305, 9776, 9815, 10340, 11440, 12080, 12220, 13288, 13442, 14194, 15704, 16610, 19630, 20680, 21593, 24440, 26576, 26884, 28388, 31408, 33220, 33605, 35485, 39260, 41360, 43186, 48880, 53768, 56776, 66440, 67210, 70970, 78067, 78520, 86372, 92261, 107536, 107965, 113552, 132880, 134420, 141940, 156134, 157040, 172744, 184522, 215930, 268840, 283880, 312268, 345488, 369044, 390335, 431860, 461305, 537680, 567760, 624536, 738088, 780670, 863720, 922610, 1014871, 1249072, 1476176, 1561340, 1727440, 1845220, 2029742, 3122680, 3690440, 4059484, 5074355, 6245360, 7380880, 8118968, 10148710, 16237936, 20297420, 40594840, 81189680]

約数ペア:

[(1, 81189680), (2, 40594840), (4, 20297420), (5, 16237936), (8, 10148710), (10, 8118968), (11, 7380880), (13, 6245360), (16, 5074355), (20, 4059484), (22, 3690440), (26, 3122680), (40, 2029742), (44, 1845220), (47, 1727440), (52, 1561340), (55, 1476176), (65, 1249072), (80, 1014871), (88, 922610), (94, 863720), (104, 780670), (110, 738088), (130, 624536), (143, 567760), (151, 537680), (176, 461305), (188, 431860), (208, 390335), (220, 369044), (235, 345488), (260, 312268), (286, 283880), (302, 268840), (376, 215930), (440, 184522), (470, 172744), (517, 157040), (520, 156134), (572, 141940), (604, 134420), (611, 132880), (715, 113552), (752, 107965), (755, 107536), (880, 92261), (940, 86372), (1034, 78520), (1040, 78067), (1144, 70970), (1208, 67210), (1222, 66440), (1430, 56776), (1510, 53768), (1661, 48880), (1880, 43186), (1963, 41360), (2068, 39260), (2288, 35485), (2416, 33605), (2444, 33220), (2585, 31408), (2860, 28388), (3020, 26884), (3055, 26576), (3322, 24440), (3760, 21593), (3926, 20680), (4136, 19630), (4888, 16610), (5170, 15704), (5720, 14194), (6040, 13442), (6110, 13288), (6644, 12220), (6721, 12080), (7097, 11440), (7852, 10340), (8272, 9815), (8305, 9776)]