21619568

素因数分解:

$2^4\times {\mathrm{19}}^3\times {\mathrm{197}}^1$

素因数の和:262

約数の個数: 40

約数和(自身を含む): 44439120

約数和(自身を除く): 22819552

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 197, 304, 361, 394, 722, 788, 1444, 1576, 2888, 3152, 3743, 5776, 6859, 7486, 13718, 14972, 27436, 29944, 54872, 59888, 71117, 109744, 142234, 284468, 568936, 1137872, 1351223, 2702446, 5404892, 10809784, 21619568]

約数ペア:

[(1, 21619568), (2, 10809784), (4, 5404892), (8, 2702446), (16, 1351223), (19, 1137872), (38, 568936), (76, 284468), (152, 142234), (197, 109744), (304, 71117), (361, 59888), (394, 54872), (722, 29944), (788, 27436), (1444, 14972), (1576, 13718), (2888, 7486), (3152, 6859), (3743, 5776)]