21068880

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12541}}^1$

素因数の和:12564

約数の個数: 80

約数和(自身を含む): 74649984

約数和(自身を除く): 53581104

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, 12541, 25082, 37623, 50164, 62705, 75246, 87787, 100328, 125410, 150492, 175574, 188115, 200656, 250820, 263361, 300984, 351148, 376230, 438935, 501640, 526722, 601968, 702296, 752460, 877870, 1003280, 1053444, 1316805, 1404592, 1504920, 1755740, 2106888, 2633610, 3009840, 3511480, 4213776, 5267220, 7022960, 10534440, 21068880]

約数ペア:

[(1, 21068880), (2, 10534440), (3, 7022960), (4, 5267220), (5, 4213776), (6, 3511480), (7, 3009840), (8, 2633610), (10, 2106888), (12, 1755740), (14, 1504920), (15, 1404592), (16, 1316805), (20, 1053444), (21, 1003280), (24, 877870), (28, 752460), (30, 702296), (35, 601968), (40, 526722), (42, 501640), (48, 438935), (56, 376230), (60, 351148), (70, 300984), (80, 263361), (84, 250820), (105, 200656), (112, 188115), (120, 175574), (140, 150492), (168, 125410), (210, 100328), (240, 87787), (280, 75246), (336, 62705), (420, 50164), (560, 37623), (840, 25082), (1680, 12541)]