21277030

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{487}}^1$

素因数の和:768

約数の個数: 32

約数和(自身を含む): 40792896

約数和(自身を除く): 19515866

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 257, 487, 514, 974, 1285, 2435, 2570, 4369, 4870, 8279, 8738, 16558, 21845, 41395, 43690, 82790, 125159, 250318, 625795, 1251590, 2127703, 4255406, 10638515, 21277030]

約数ペア:

[(1, 21277030), (2, 10638515), (5, 4255406), (10, 2127703), (17, 1251590), (34, 625795), (85, 250318), (170, 125159), (257, 82790), (487, 43690), (514, 41395), (974, 21845), (1285, 16558), (2435, 8738), (2570, 8279), (4369, 4870)]