21072045

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{691}}^1$

素因数の和:825

約数の個数: 32

約数和(自身を含む): 35873280

約数和(自身を除く): 14801235

約数列:

[1, 3, 5, 15, 19, 57, 95, 107, 285, 321, 535, 691, 1605, 2033, 2073, 3455, 6099, 10165, 10365, 13129, 30495, 39387, 65645, 73937, 196935, 221811, 369685, 1109055, 1404803, 4214409, 7024015, 21072045]

約数ペア:

[(1, 21072045), (3, 7024015), (5, 4214409), (15, 1404803), (19, 1109055), (57, 369685), (95, 221811), (107, 196935), (285, 73937), (321, 65645), (535, 39387), (691, 30495), (1605, 13129), (2033, 10365), (2073, 10165), (3455, 6099)]