28709285

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{331}}^1$

素因数の和:449

約数の個数: 32

約数和(自身を含む): 40158720

約数和(自身を除く): 11449435

約数列:

[1, 5, 11, 19, 55, 83, 95, 209, 331, 415, 913, 1045, 1577, 1655, 3641, 4565, 6289, 7885, 17347, 18205, 27473, 31445, 69179, 86735, 137365, 302203, 345895, 521987, 1511015, 2609935, 5741857, 28709285]

約数ペア:

[(1, 28709285), (5, 5741857), (11, 2609935), (19, 1511015), (55, 521987), (83, 345895), (95, 302203), (209, 137365), (331, 86735), (415, 69179), (913, 31445), (1045, 27473), (1577, 18205), (1655, 17347), (3641, 7885), (4565, 6289)]