21980730

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{439}}^1\times {\mathrm{1669}}^1$

素因数の和:2118

約数の個数: 32

約数和(自身を含む): 52905600

約数和(自身を除く): 30924870

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 439, 878, 1317, 1669, 2195, 2634, 3338, 4390, 5007, 6585, 8345, 10014, 13170, 16690, 25035, 50070, 732691, 1465382, 2198073, 3663455, 4396146, 7326910, 10990365, 21980730]

約数ペア:

[(1, 21980730), (2, 10990365), (3, 7326910), (5, 4396146), (6, 3663455), (10, 2198073), (15, 1465382), (30, 732691), (439, 50070), (878, 25035), (1317, 16690), (1669, 13170), (2195, 10014), (2634, 8345), (3338, 6585), (4390, 5007)]