80398640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{143569}}^1$

素因数の和:143589

約数の個数: 40

約数和(自身を含む): 213632160

約数和(自身を除く): 133233520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 143569, 287138, 574276, 717845, 1004983, 1148552, 1435690, 2009966, 2297104, 2871380, 4019932, 5024915, 5742760, 8039864, 10049830, 11485520, 16079728, 20099660, 40199320, 80398640]

約数ペア:

[(1, 80398640), (2, 40199320), (4, 20099660), (5, 16079728), (7, 11485520), (8, 10049830), (10, 8039864), (14, 5742760), (16, 5024915), (20, 4019932), (28, 2871380), (35, 2297104), (40, 2009966), (56, 1435690), (70, 1148552), (80, 1004983), (112, 717845), (140, 574276), (280, 287138), (560, 143569)]