21200120

素因数分解:

$2^3\times 5^1\times {\mathrm{617}}^1\times {\mathrm{859}}^1$

素因数の和:1487

約数の個数: 32

約数和(自身を含む): 47833200

約数和(自身を除く): 26633080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 617, 859, 1234, 1718, 2468, 3085, 3436, 4295, 4936, 6170, 6872, 8590, 12340, 17180, 24680, 34360, 530003, 1060006, 2120012, 2650015, 4240024, 5300030, 10600060, 21200120]

約数ペア:

[(1, 21200120), (2, 10600060), (4, 5300030), (5, 4240024), (8, 2650015), (10, 2120012), (20, 1060006), (40, 530003), (617, 34360), (859, 24680), (1234, 17180), (1718, 12340), (2468, 8590), (3085, 6872), (3436, 6170), (4295, 4936)]