21086640765

素因数分解:

$3^3\times 5^1\times {\mathrm{509}}^1\times {\mathrm{306871}}^1$

素因数の和:307394

約数の個数: 32

約数和(自身を含む): 37561132800

約数和(自身を除く): 16474492035

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 509, 1527, 2545, 4581, 7635, 13743, 22905, 68715, 306871, 920613, 1534355, 2761839, 4603065, 8285517, 13809195, 41427585, 156197339, 468592017, 780986695, 1405776051, 2342960085, 4217328153, 7028880255, 21086640765]

約数ペア:

[(1, 21086640765), (3, 7028880255), (5, 4217328153), (9, 2342960085), (15, 1405776051), (27, 780986695), (45, 468592017), (135, 156197339), (509, 41427585), (1527, 13809195), (2545, 8285517), (4581, 4603065), (7635, 2761839), (13743, 1534355), (22905, 920613), (68715, 306871)]