21275888

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{433}}^1$

素因数の和:561

約数の個数: 40

約数和(自身を含む): 42945168

約数和(自身を除く): 21669280

約数列:

[1, 2, 4, 8, 16, 37, 74, 83, 148, 166, 296, 332, 433, 592, 664, 866, 1328, 1732, 3071, 3464, 6142, 6928, 12284, 16021, 24568, 32042, 35939, 49136, 64084, 71878, 128168, 143756, 256336, 287512, 575024, 1329743, 2659486, 5318972, 10637944, 21275888]

約数ペア:

[(1, 21275888), (2, 10637944), (4, 5318972), (8, 2659486), (16, 1329743), (37, 575024), (74, 287512), (83, 256336), (148, 143756), (166, 128168), (296, 71878), (332, 64084), (433, 49136), (592, 35939), (664, 32042), (866, 24568), (1328, 16021), (1732, 12284), (3071, 6928), (3464, 6142)]