21128570

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{1823}}^1$

素因数の和:1910

約数の個数: 32

約数和(自身を含む): 40711680

約数和(自身を除く): 19583110

約数列:

[1, 2, 5, 10, 19, 38, 61, 95, 122, 190, 305, 610, 1159, 1823, 2318, 3646, 5795, 9115, 11590, 18230, 34637, 69274, 111203, 173185, 222406, 346370, 556015, 1112030, 2112857, 4225714, 10564285, 21128570]

約数ペア:

[(1, 21128570), (2, 10564285), (5, 4225714), (10, 2112857), (19, 1112030), (38, 556015), (61, 346370), (95, 222406), (122, 173185), (190, 111203), (305, 69274), (610, 34637), (1159, 18230), (1823, 11590), (2318, 9115), (3646, 5795)]