28180705

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1367}}^1$

素因数の和:1429

約数の個数: 32

約数和(自身を含む): 42024960

約数和(自身を除く): 13844255

約数列:

[1, 5, 7, 19, 31, 35, 95, 133, 155, 217, 589, 665, 1085, 1367, 2945, 4123, 6835, 9569, 20615, 25973, 42377, 47845, 129865, 181811, 211885, 296639, 805163, 909055, 1483195, 4025815, 5636141, 28180705]

約数ペア:

[(1, 28180705), (5, 5636141), (7, 4025815), (19, 1483195), (31, 909055), (35, 805163), (95, 296639), (133, 211885), (155, 181811), (217, 129865), (589, 47845), (665, 42377), (1085, 25973), (1367, 20615), (2945, 9569), (4123, 6835)]