280845680

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{113}}^1\times {\mathrm{661}}^1$

素因数の和:834

約数の個数: 80

約数和(自身を含む): 673778304

約数和(自身を除く): 392932624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 113, 188, 226, 235, 376, 452, 470, 565, 661, 752, 904, 940, 1130, 1322, 1808, 1880, 2260, 2644, 3305, 3760, 4520, 5288, 5311, 6610, 9040, 10576, 10622, 13220, 21244, 26440, 26555, 31067, 42488, 52880, 53110, 62134, 74693, 84976, 106220, 124268, 149386, 155335, 212440, 248536, 298772, 310670, 373465, 424880, 497072, 597544, 621340, 746930, 1195088, 1242680, 1493860, 2485360, 2987720, 3510571, 5975440, 7021142, 14042284, 17552855, 28084568, 35105710, 56169136, 70211420, 140422840, 280845680]

約数ペア:

[(1, 280845680), (2, 140422840), (4, 70211420), (5, 56169136), (8, 35105710), (10, 28084568), (16, 17552855), (20, 14042284), (40, 7021142), (47, 5975440), (80, 3510571), (94, 2987720), (113, 2485360), (188, 1493860), (226, 1242680), (235, 1195088), (376, 746930), (452, 621340), (470, 597544), (565, 497072), (661, 424880), (752, 373465), (904, 310670), (940, 298772), (1130, 248536), (1322, 212440), (1808, 155335), (1880, 149386), (2260, 124268), (2644, 106220), (3305, 84976), (3760, 74693), (4520, 62134), (5288, 53110), (5311, 52880), (6610, 42488), (9040, 31067), (10576, 26555), (10622, 26440), (13220, 21244)]