686261680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{193}}^1\times {\mathrm{263}}^1$

素因数の和:495

約数の個数: 120

約数和(自身を含む): 1743290208

約数和(自身を除く): 1057028528

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 169, 193, 208, 260, 263, 338, 386, 520, 526, 676, 772, 845, 965, 1040, 1052, 1315, 1352, 1544, 1690, 1930, 2104, 2509, 2630, 2704, 3088, 3380, 3419, 3860, 4208, 5018, 5260, 6760, 6838, 7720, 10036, 10520, 12545, 13520, 13676, 15440, 17095, 20072, 21040, 25090, 27352, 32617, 34190, 40144, 44447, 50180, 50759, 54704, 65234, 68380, 88894, 100360, 101518, 130468, 136760, 163085, 177788, 200720, 203036, 222235, 253795, 260936, 273520, 326170, 355576, 406072, 444470, 507590, 521872, 652340, 659867, 711152, 812144, 888940, 1015180, 1304680, 1319734, 1777880, 2030360, 2609360, 2639468, 3299335, 3555760, 4060720, 5278936, 6598670, 8578271, 10557872, 13197340, 17156542, 26394680, 34313084, 42891355, 52789360, 68626168, 85782710, 137252336, 171565420, 343130840, 686261680]

約数ペア:

[(1, 686261680), (2, 343130840), (4, 171565420), (5, 137252336), (8, 85782710), (10, 68626168), (13, 52789360), (16, 42891355), (20, 34313084), (26, 26394680), (40, 17156542), (52, 13197340), (65, 10557872), (80, 8578271), (104, 6598670), (130, 5278936), (169, 4060720), (193, 3555760), (208, 3299335), (260, 2639468), (263, 2609360), (338, 2030360), (386, 1777880), (520, 1319734), (526, 1304680), (676, 1015180), (772, 888940), (845, 812144), (965, 711152), (1040, 659867), (1052, 652340), (1315, 521872), (1352, 507590), (1544, 444470), (1690, 406072), (1930, 355576), (2104, 326170), (2509, 273520), (2630, 260936), (2704, 253795), (3088, 222235), (3380, 203036), (3419, 200720), (3860, 177788), (4208, 163085), (5018, 136760), (5260, 130468), (6760, 101518), (6838, 100360), (7720, 88894), (10036, 68380), (10520, 65234), (12545, 54704), (13520, 50759), (13676, 50180), (15440, 44447), (17095, 40144), (20072, 34190), (21040, 32617), (25090, 27352)]