21089392

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{401}}^1$

素因数の和:601

約数の個数: 40

約数和(自身を含む): 43367760

約数和(自身を除く): 22278368

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 173, 304, 346, 401, 692, 802, 1384, 1604, 2768, 3208, 3287, 6416, 6574, 7619, 13148, 15238, 26296, 30476, 52592, 60952, 69373, 121904, 138746, 277492, 554984, 1109968, 1318087, 2636174, 5272348, 10544696, 21089392]

約数ペア:

[(1, 21089392), (2, 10544696), (4, 5272348), (8, 2636174), (16, 1318087), (19, 1109968), (38, 554984), (76, 277492), (152, 138746), (173, 121904), (304, 69373), (346, 60952), (401, 52592), (692, 30476), (802, 26296), (1384, 15238), (1604, 13148), (2768, 7619), (3208, 6574), (3287, 6416)]