21072105

素因数分解:

$3^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2377}}^1$

素因数の和:2585

約数の個数: 24

約数和(自身を含む): 36725832

約数和(自身を除く): 15653727

約数列:

[1, 3, 5, 9, 15, 45, 197, 591, 985, 1773, 2377, 2955, 7131, 8865, 11885, 21393, 35655, 106965, 468269, 1404807, 2341345, 4214421, 7024035, 21072105]

約数ペア:

[(1, 21072105), (3, 7024035), (5, 4214421), (9, 2341345), (15, 1404807), (45, 468269), (197, 106965), (591, 35655), (985, 21393), (1773, 11885), (2377, 8865), (2955, 7131)]