21391965

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{22637}}^1$

素因数の和:22658

約数の個数: 32

約数和(自身を含む): 43464960

約数和(自身を除く): 22072995

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 22637, 67911, 113185, 158459, 203733, 339555, 475377, 611199, 792295, 1018665, 1426131, 2376885, 3055995, 4278393, 7130655, 21391965]

約数ペア:

[(1, 21391965), (3, 7130655), (5, 4278393), (7, 3055995), (9, 2376885), (15, 1426131), (21, 1018665), (27, 792295), (35, 611199), (45, 475377), (63, 339555), (105, 203733), (135, 158459), (189, 113185), (315, 67911), (945, 22637)]