19977344

素因数分解:

$2^7\times {\mathrm{97}}^1\times {\mathrm{1609}}^1$

素因数の和:1720

約数の個数: 32

約数和(自身を含む): 40233900

約数和(自身を除く): 20256556

約数列:

[1, 2, 4, 8, 16, 32, 64, 97, 128, 194, 388, 776, 1552, 1609, 3104, 3218, 6208, 6436, 12416, 12872, 25744, 51488, 102976, 156073, 205952, 312146, 624292, 1248584, 2497168, 4994336, 9988672, 19977344]

約数ペア:

[(1, 19977344), (2, 9988672), (4, 4994336), (8, 2497168), (16, 1248584), (32, 624292), (64, 312146), (97, 205952), (128, 156073), (194, 102976), (388, 51488), (776, 25744), (1552, 12872), (1609, 12416), (3104, 6436), (3218, 6208)]