81556440

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{1229}}^1$

素因数の和:1329

約数の個数: 128

約数和(自身を含む): 283392000

約数和(自身を除く): 201835560

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 79, 84, 105, 120, 140, 158, 168, 210, 237, 280, 316, 395, 420, 474, 553, 632, 790, 840, 948, 1106, 1185, 1229, 1580, 1659, 1896, 2212, 2370, 2458, 2765, 3160, 3318, 3687, 4424, 4740, 4916, 5530, 6145, 6636, 7374, 8295, 8603, 9480, 9832, 11060, 12290, 13272, 14748, 16590, 17206, 18435, 22120, 24580, 25809, 29496, 33180, 34412, 36870, 43015, 49160, 51618, 66360, 68824, 73740, 86030, 97091, 103236, 129045, 147480, 172060, 194182, 206472, 258090, 291273, 344120, 388364, 485455, 516180, 582546, 679637, 776728, 970910, 1032360, 1165092, 1359274, 1456365, 1941820, 2038911, 2330184, 2718548, 2912730, 3398185, 3883640, 4077822, 5437096, 5825460, 6796370, 8155644, 10194555, 11650920, 13592740, 16311288, 20389110, 27185480, 40778220, 81556440]

約数ペア:

[(1, 81556440), (2, 40778220), (3, 27185480), (4, 20389110), (5, 16311288), (6, 13592740), (7, 11650920), (8, 10194555), (10, 8155644), (12, 6796370), (14, 5825460), (15, 5437096), (20, 4077822), (21, 3883640), (24, 3398185), (28, 2912730), (30, 2718548), (35, 2330184), (40, 2038911), (42, 1941820), (56, 1456365), (60, 1359274), (70, 1165092), (79, 1032360), (84, 970910), (105, 776728), (120, 679637), (140, 582546), (158, 516180), (168, 485455), (210, 388364), (237, 344120), (280, 291273), (316, 258090), (395, 206472), (420, 194182), (474, 172060), (553, 147480), (632, 129045), (790, 103236), (840, 97091), (948, 86030), (1106, 73740), (1185, 68824), (1229, 66360), (1580, 51618), (1659, 49160), (1896, 43015), (2212, 36870), (2370, 34412), (2458, 33180), (2765, 29496), (3160, 25809), (3318, 24580), (3687, 22120), (4424, 18435), (4740, 17206), (4916, 16590), (5530, 14748), (6145, 13272), (6636, 12290), (7374, 11060), (8295, 9832), (8603, 9480)]