19381615

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1091}}^1$

素因数の和:1143

約数の個数: 32

約数和(自身を含む): 28304640

約数和(自身を除く): 8923025

約数列:

[1, 5, 11, 17, 19, 55, 85, 95, 187, 209, 323, 935, 1045, 1091, 1615, 3553, 5455, 12001, 17765, 18547, 20729, 60005, 92735, 103645, 204017, 228019, 352393, 1020085, 1140095, 1761965, 3876323, 19381615]

約数ペア:

[(1, 19381615), (5, 3876323), (11, 1761965), (17, 1140095), (19, 1020085), (55, 352393), (85, 228019), (95, 204017), (187, 103645), (209, 92735), (323, 60005), (935, 20729), (1045, 18547), (1091, 17765), (1615, 12001), (3553, 5455)]