28284685

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{179}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 42690240

約数和(自身を除く): 14405555

約数列:

[1, 5, 11, 13, 17, 55, 65, 85, 143, 169, 179, 187, 221, 715, 845, 895, 935, 1105, 1859, 1969, 2327, 2431, 2873, 3043, 9295, 9845, 11635, 12155, 14365, 15215, 25597, 30251, 31603, 33473, 39559, 127985, 151255, 158015, 167365, 197795, 332761, 435149, 514267, 1663805, 2175745, 2571335, 5656937, 28284685]

約数ペア:

[(1, 28284685), (5, 5656937), (11, 2571335), (13, 2175745), (17, 1663805), (55, 514267), (65, 435149), (85, 332761), (143, 197795), (169, 167365), (179, 158015), (187, 151255), (221, 127985), (715, 39559), (845, 33473), (895, 31603), (935, 30251), (1105, 25597), (1859, 15215), (1969, 14365), (2327, 12155), (2431, 11635), (2873, 9845), (3043, 9295)]