18447765

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1321}}^1$

素因数の和:1362

約数の個数: 48

約数和(自身を含む): 36169920

約数和(自身を除く): 17722155

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 49, 57, 95, 105, 133, 147, 245, 285, 399, 665, 735, 931, 1321, 1995, 2793, 3963, 4655, 6605, 9247, 13965, 19815, 25099, 27741, 46235, 64729, 75297, 125495, 138705, 175693, 194187, 323645, 376485, 527079, 878465, 970935, 1229851, 2635395, 3689553, 6149255, 18447765]

約数ペア:

[(1, 18447765), (3, 6149255), (5, 3689553), (7, 2635395), (15, 1229851), (19, 970935), (21, 878465), (35, 527079), (49, 376485), (57, 323645), (95, 194187), (105, 175693), (133, 138705), (147, 125495), (245, 75297), (285, 64729), (399, 46235), (665, 27741), (735, 25099), (931, 19815), (1321, 13965), (1995, 9247), (2793, 6605), (3963, 4655)]