18309968

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{157}}^1\times {\mathrm{197}}^1$

素因数の和:399

約数の個数: 40

約数和(自身を含む): 36852552

約数和(自身を除く): 18542584

約数列:

[1, 2, 4, 8, 16, 37, 74, 148, 157, 197, 296, 314, 394, 592, 628, 788, 1256, 1576, 2512, 3152, 5809, 7289, 11618, 14578, 23236, 29156, 30929, 46472, 58312, 61858, 92944, 116624, 123716, 247432, 494864, 1144373, 2288746, 4577492, 9154984, 18309968]

約数ペア:

[(1, 18309968), (2, 9154984), (4, 4577492), (8, 2288746), (16, 1144373), (37, 494864), (74, 247432), (148, 123716), (157, 116624), (197, 92944), (296, 61858), (314, 58312), (394, 46472), (592, 30929), (628, 29156), (788, 23236), (1256, 14578), (1576, 11618), (2512, 7289), (3152, 5809)]