20315640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{2143}}^1$

素因数の和:2236

約数の個数: 64

約数和(自身を含む): 61747200

約数和(自身を除く): 41431560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 79, 120, 158, 237, 316, 395, 474, 632, 790, 948, 1185, 1580, 1896, 2143, 2370, 3160, 4286, 4740, 6429, 8572, 9480, 10715, 12858, 17144, 21430, 25716, 32145, 42860, 51432, 64290, 85720, 128580, 169297, 257160, 338594, 507891, 677188, 846485, 1015782, 1354376, 1692970, 2031564, 2539455, 3385940, 4063128, 5078910, 6771880, 10157820, 20315640]

約数ペア:

[(1, 20315640), (2, 10157820), (3, 6771880), (4, 5078910), (5, 4063128), (6, 3385940), (8, 2539455), (10, 2031564), (12, 1692970), (15, 1354376), (20, 1015782), (24, 846485), (30, 677188), (40, 507891), (60, 338594), (79, 257160), (120, 169297), (158, 128580), (237, 85720), (316, 64290), (395, 51432), (474, 42860), (632, 32145), (790, 25716), (948, 21430), (1185, 17144), (1580, 12858), (1896, 10715), (2143, 9480), (2370, 8572), (3160, 6429), (4286, 4740)]