21061716

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1709}}^1$

素因数の和:1808

約数の個数: 48

約数和(自身を含む): 53625600

約数和(自身を除く): 32563884

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 79, 156, 158, 237, 316, 474, 948, 1027, 1709, 2054, 3081, 3418, 4108, 5127, 6162, 6836, 10254, 12324, 20508, 22217, 44434, 66651, 88868, 133302, 135011, 266604, 270022, 405033, 540044, 810066, 1620132, 1755143, 3510286, 5265429, 7020572, 10530858, 21061716]

約数ペア:

[(1, 21061716), (2, 10530858), (3, 7020572), (4, 5265429), (6, 3510286), (12, 1755143), (13, 1620132), (26, 810066), (39, 540044), (52, 405033), (78, 270022), (79, 266604), (156, 135011), (158, 133302), (237, 88868), (316, 66651), (474, 44434), (948, 22217), (1027, 20508), (1709, 12324), (2054, 10254), (3081, 6836), (3418, 6162), (4108, 5127)]