20780530

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{547}}^1$

素因数の和:714

約数の個数: 32

約数和(自身を含む): 39061440

約数和(自身を除く): 18280910

約数列:

[1, 2, 5, 10, 29, 58, 131, 145, 262, 290, 547, 655, 1094, 1310, 2735, 3799, 5470, 7598, 15863, 18995, 31726, 37990, 71657, 79315, 143314, 158630, 358285, 716570, 2078053, 4156106, 10390265, 20780530]

約数ペア:

[(1, 20780530), (2, 10390265), (5, 4156106), (10, 2078053), (29, 716570), (58, 358285), (131, 158630), (145, 143314), (262, 79315), (290, 71657), (547, 37990), (655, 31726), (1094, 18995), (1310, 15863), (2735, 7598), (3799, 5470)]