18781345

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{379}}^1$

素因数の和:465

約数の個数: 32

約数和(自身を含む): 26593920

約数和(自身を除く): 7812575

約数列:

[1, 5, 11, 17, 53, 55, 85, 187, 265, 379, 583, 901, 935, 1895, 2915, 4169, 4505, 6443, 9911, 20087, 20845, 32215, 49555, 70873, 100435, 220957, 341479, 354365, 1104785, 1707395, 3756269, 18781345]

約数ペア:

[(1, 18781345), (5, 3756269), (11, 1707395), (17, 1104785), (53, 354365), (55, 341479), (85, 220957), (187, 100435), (265, 70873), (379, 49555), (583, 32215), (901, 20845), (935, 20087), (1895, 9911), (2915, 6443), (4169, 4505)]