20994960

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12497}}^1$

素因数の和:12520

約数の個数: 80

約数和(自身を含む): 74388096

約数和(自身を除く): 53393136

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, 12497, 24994, 37491, 49988, 62485, 74982, 87479, 99976, 124970, 149964, 174958, 187455, 199952, 249940, 262437, 299928, 349916, 374910, 437395, 499880, 524874, 599856, 699832, 749820, 874790, 999760, 1049748, 1312185, 1399664, 1499640, 1749580, 2099496, 2624370, 2999280, 3499160, 4198992, 5248740, 6998320, 10497480, 20994960]

約数ペア:

[(1, 20994960), (2, 10497480), (3, 6998320), (4, 5248740), (5, 4198992), (6, 3499160), (7, 2999280), (8, 2624370), (10, 2099496), (12, 1749580), (14, 1499640), (15, 1399664), (16, 1312185), (20, 1049748), (21, 999760), (24, 874790), (28, 749820), (30, 699832), (35, 599856), (40, 524874), (42, 499880), (48, 437395), (56, 374910), (60, 349916), (70, 299928), (80, 262437), (84, 249940), (105, 199952), (112, 187455), (120, 174958), (140, 149964), (168, 124970), (210, 99976), (240, 87479), (280, 74982), (336, 62485), (420, 49988), (560, 37491), (840, 24994), (1680, 12497)]