19804672

素因数分解:

$2^9\times {\mathrm{47}}^1\times {\mathrm{823}}^1$

素因数の和:888

約数の個数: 40

約数和(自身を含む): 40461696

約数和(自身を除く): 20657024

約数列:

[1, 2, 4, 8, 16, 32, 47, 64, 94, 128, 188, 256, 376, 512, 752, 823, 1504, 1646, 3008, 3292, 6016, 6584, 12032, 13168, 24064, 26336, 38681, 52672, 77362, 105344, 154724, 210688, 309448, 421376, 618896, 1237792, 2475584, 4951168, 9902336, 19804672]

約数ペア:

[(1, 19804672), (2, 9902336), (4, 4951168), (8, 2475584), (16, 1237792), (32, 618896), (47, 421376), (64, 309448), (94, 210688), (128, 154724), (188, 105344), (256, 77362), (376, 52672), (512, 38681), (752, 26336), (823, 24064), (1504, 13168), (1646, 12032), (3008, 6584), (3292, 6016)]