311609870

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{217909}}^1$

素因数の和:217940

約数の個数: 32

約数和(自身を含む): 658959840

約数和(自身を除く): 347349970

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 130, 143, 286, 715, 1430, 217909, 435818, 1089545, 2179090, 2396999, 2832817, 4793998, 5665634, 11984995, 14164085, 23969990, 28328170, 31160987, 62321974, 155804935, 311609870]

約数ペア:

[(1, 311609870), (2, 155804935), (5, 62321974), (10, 31160987), (11, 28328170), (13, 23969990), (22, 14164085), (26, 11984995), (55, 5665634), (65, 4793998), (110, 2832817), (130, 2396999), (143, 2179090), (286, 1089545), (715, 435818), (1430, 217909)]