20236640

素因数分解:

$2^5\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1601}}^1$

素因数の和:1695

約数の個数: 48

約数和(自身を含む): 48444480

約数和(自身を除く): 28207840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 79, 80, 158, 160, 316, 395, 632, 790, 1264, 1580, 1601, 2528, 3160, 3202, 6320, 6404, 8005, 12640, 12808, 16010, 25616, 32020, 51232, 64040, 126479, 128080, 252958, 256160, 505916, 632395, 1011832, 1264790, 2023664, 2529580, 4047328, 5059160, 10118320, 20236640]

約数ペア:

[(1, 20236640), (2, 10118320), (4, 5059160), (5, 4047328), (8, 2529580), (10, 2023664), (16, 1264790), (20, 1011832), (32, 632395), (40, 505916), (79, 256160), (80, 252958), (158, 128080), (160, 126479), (316, 64040), (395, 51232), (632, 32020), (790, 25616), (1264, 16010), (1580, 12808), (1601, 12640), (2528, 8005), (3160, 6404), (3202, 6320)]