20469584

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{487}}^1$

素因数の和:603

約数の個数: 40

約数和(自身を含む): 41390208

約数和(自身を除く): 20920624

約数列:

[1, 2, 4, 8, 16, 37, 71, 74, 142, 148, 284, 296, 487, 568, 592, 974, 1136, 1948, 2627, 3896, 5254, 7792, 10508, 18019, 21016, 34577, 36038, 42032, 69154, 72076, 138308, 144152, 276616, 288304, 553232, 1279349, 2558698, 5117396, 10234792, 20469584]

約数ペア:

[(1, 20469584), (2, 10234792), (4, 5117396), (8, 2558698), (16, 1279349), (37, 553232), (71, 288304), (74, 276616), (142, 144152), (148, 138308), (284, 72076), (296, 69154), (487, 42032), (568, 36038), (592, 34577), (974, 21016), (1136, 18019), (1948, 10508), (2627, 7792), (3896, 5254)]