21360105

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4057}}^1$

素因数の和:4087

約数の個数: 40

約数和(自身を含む): 41245512

約数和(自身を除く): 19885407

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 117, 135, 195, 351, 405, 585, 1053, 1755, 4057, 5265, 12171, 20285, 36513, 52741, 60855, 109539, 158223, 182565, 263705, 328617, 474669, 547695, 791115, 1424007, 1643085, 2373345, 4272021, 7120035, 21360105]

約数ペア:

[(1, 21360105), (3, 7120035), (5, 4272021), (9, 2373345), (13, 1643085), (15, 1424007), (27, 791115), (39, 547695), (45, 474669), (65, 328617), (81, 263705), (117, 182565), (135, 158223), (195, 109539), (351, 60855), (405, 52741), (585, 36513), (1053, 20285), (1755, 12171), (4057, 5265)]