21982005

素因数分解:

$3^2\times 5^1\times {\mathrm{557}}^1\times {\mathrm{877}}^1$

素因数の和:1445

約数の個数: 24

約数和(自身を含む): 38214072

約数和(自身を除く): 16232067

約数列:

[1, 3, 5, 9, 15, 45, 557, 877, 1671, 2631, 2785, 4385, 5013, 7893, 8355, 13155, 25065, 39465, 488489, 1465467, 2442445, 4396401, 7327335, 21982005]

約数ペア:

[(1, 21982005), (3, 7327335), (5, 4396401), (9, 2442445), (15, 1465467), (45, 488489), (557, 39465), (877, 25065), (1671, 13155), (2631, 8355), (2785, 7893), (4385, 5013)]