80887220

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{66301}}^1$

素因数の和:66371

約数の個数: 24

約数和(自身を含む): 172650408

約数和(自身を除く): 91763188

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 66301, 132602, 265204, 331505, 663010, 1326020, 4044361, 8088722, 16177444, 20221805, 40443610, 80887220]

約数ペア:

[(1, 80887220), (2, 40443610), (4, 20221805), (5, 16177444), (10, 8088722), (20, 4044361), (61, 1326020), (122, 663010), (244, 331505), (305, 265204), (610, 132602), (1220, 66301)]