21681230

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{35543}}^1$

素因数の和:35611

約数の個数: 16

約数和(自身を含む): 39667104

約数和(自身を除く): 17985874

約数列:

[1, 2, 5, 10, 61, 122, 305, 610, 35543, 71086, 177715, 355430, 2168123, 4336246, 10840615, 21681230]

約数ペア:

[(1, 21681230), (2, 10840615), (5, 4336246), (10, 2168123), (61, 355430), (122, 177715), (305, 71086), (610, 35543)]