128820720

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{76679}}^1$

素因数の和:76702

約数の個数: 80

約数和(自身を含む): 456399360

約数和(自身を除く): 327578640

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 76679, 153358, 230037, 306716, 383395, 460074, 536753, 613432, 766790, 920148, 1073506, 1150185, 1226864, 1533580, 1610259, 1840296, 2147012, 2300370, 2683765, 3067160, 3220518, 3680592, 4294024, 4600740, 5367530, 6134320, 6441036, 8051295, 8588048, 9201480, 10735060, 12882072, 16102590, 18402960, 21470120, 25764144, 32205180, 42940240, 64410360, 128820720]

約数ペア:

[(1, 128820720), (2, 64410360), (3, 42940240), (4, 32205180), (5, 25764144), (6, 21470120), (7, 18402960), (8, 16102590), (10, 12882072), (12, 10735060), (14, 9201480), (15, 8588048), (16, 8051295), (20, 6441036), (21, 6134320), (24, 5367530), (28, 4600740), (30, 4294024), (35, 3680592), (40, 3220518), (42, 3067160), (48, 2683765), (56, 2300370), (60, 2147012), (70, 1840296), (80, 1610259), (84, 1533580), (105, 1226864), (112, 1150185), (120, 1073506), (140, 920148), (168, 766790), (210, 613432), (240, 536753), (280, 460074), (336, 383395), (420, 306716), (560, 230037), (840, 153358), (1680, 76679)]