19982775

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{379}}^1$

素因数の和:448

約数の個数: 48

約数和(自身を含む): 35811200

約数和(自身を除く): 15828425

約数列:

[1, 3, 5, 15, 19, 25, 37, 57, 75, 95, 111, 185, 285, 379, 475, 555, 703, 925, 1137, 1425, 1895, 2109, 2775, 3515, 5685, 7201, 9475, 10545, 14023, 17575, 21603, 28425, 36005, 42069, 52725, 70115, 108015, 180025, 210345, 266437, 350575, 540075, 799311, 1051725, 1332185, 3996555, 6660925, 19982775]

約数ペア:

[(1, 19982775), (3, 6660925), (5, 3996555), (15, 1332185), (19, 1051725), (25, 799311), (37, 540075), (57, 350575), (75, 266437), (95, 210345), (111, 180025), (185, 108015), (285, 70115), (379, 52725), (475, 42069), (555, 36005), (703, 28425), (925, 21603), (1137, 17575), (1425, 14023), (1895, 10545), (2109, 9475), (2775, 7201), (3515, 5685)]