21056048

素因数分解:

$2^4\times {\mathrm{13}}^3\times {\mathrm{599}}^1$

素因数の和:646

約数の個数: 40

約数和(自身を含む): 44268000

約数和(自身を除く): 23211952

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 169, 208, 338, 599, 676, 1198, 1352, 2197, 2396, 2704, 4394, 4792, 7787, 8788, 9584, 15574, 17576, 31148, 35152, 62296, 101231, 124592, 202462, 404924, 809848, 1316003, 1619696, 2632006, 5264012, 10528024, 21056048]

約数ペア:

[(1, 21056048), (2, 10528024), (4, 5264012), (8, 2632006), (13, 1619696), (16, 1316003), (26, 809848), (52, 404924), (104, 202462), (169, 124592), (208, 101231), (338, 62296), (599, 35152), (676, 31148), (1198, 17576), (1352, 15574), (2197, 9584), (2396, 8788), (2704, 7787), (4394, 4792)]