21090

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1$

素因数の和:66

約数の個数: 32

約数和(自身を含む): 54720

約数和(自身を除く): 33630

約数列:

[1, 2, 3, 5, 6, 10, 15, 19, 30, 37, 38, 57, 74, 95, 111, 114, 185, 190, 222, 285, 370, 555, 570, 703, 1110, 1406, 2109, 3515, 4218, 7030, 10545, 21090]

約数ペア:

[(1, 21090), (2, 10545), (3, 7030), (5, 4218), (6, 3515), (10, 2109), (15, 1406), (19, 1110), (30, 703), (37, 570), (38, 555), (57, 370), (74, 285), (95, 222), (111, 190), (114, 185)]