278291271

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{107}}^1\times {\mathrm{443}}^1$

素因数の和:675

約数の個数: 32

約数和(自身を含む): 398960640

約数和(自身を除く): 120669369

約数列:

[1, 3, 19, 57, 103, 107, 309, 321, 443, 1329, 1957, 2033, 5871, 6099, 8417, 11021, 25251, 33063, 45629, 47401, 136887, 142203, 209399, 628197, 866951, 900619, 2600853, 2701857, 4882303, 14646909, 92763757, 278291271]

約数ペア:

[(1, 278291271), (3, 92763757), (19, 14646909), (57, 4882303), (103, 2701857), (107, 2600853), (309, 900619), (321, 866951), (443, 628197), (1329, 209399), (1957, 142203), (2033, 136887), (5871, 47401), (6099, 45629), (8417, 33063), (11021, 25251)]