19890016

素因数分解:

$2^5\times {\mathrm{37}}^1\times {\mathrm{107}}^1\times {\mathrm{157}}^1$

素因数の和:311

約数の個数: 48

約数和(自身を含む): 40851216

約数和(自身を除く): 20961200

約数列:

[1, 2, 4, 8, 16, 32, 37, 74, 107, 148, 157, 214, 296, 314, 428, 592, 628, 856, 1184, 1256, 1712, 2512, 3424, 3959, 5024, 5809, 7918, 11618, 15836, 16799, 23236, 31672, 33598, 46472, 63344, 67196, 92944, 126688, 134392, 185888, 268784, 537568, 621563, 1243126, 2486252, 4972504, 9945008, 19890016]

約数ペア:

[(1, 19890016), (2, 9945008), (4, 4972504), (8, 2486252), (16, 1243126), (32, 621563), (37, 537568), (74, 268784), (107, 185888), (148, 134392), (157, 126688), (214, 92944), (296, 67196), (314, 63344), (428, 46472), (592, 33598), (628, 31672), (856, 23236), (1184, 16799), (1256, 15836), (1712, 11618), (2512, 7918), (3424, 5809), (3959, 5024)]