21240368

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{35879}}^1$

素因数の和:35924

約数の個数: 20

約数和(自身を含む): 42266640

約数和(自身を除く): 21026272

約数列:

[1, 2, 4, 8, 16, 37, 74, 148, 296, 592, 35879, 71758, 143516, 287032, 574064, 1327523, 2655046, 5310092, 10620184, 21240368]

約数ペア:

[(1, 21240368), (2, 10620184), (4, 5310092), (8, 2655046), (16, 1327523), (37, 574064), (74, 287032), (148, 143516), (296, 71758), (592, 35879)]