19507917

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1229}}^1$

素因数の和:1293

約数の個数: 32

約数和(自身を含む): 31409280

約数和(自身を除く): 11901363

約数列:

[1, 3, 11, 13, 33, 37, 39, 111, 143, 407, 429, 481, 1221, 1229, 1443, 3687, 5291, 13519, 15873, 15977, 40557, 45473, 47931, 136419, 175747, 500203, 527241, 591149, 1500609, 1773447, 6502639, 19507917]

約数ペア:

[(1, 19507917), (3, 6502639), (11, 1773447), (13, 1500609), (33, 591149), (37, 527241), (39, 500203), (111, 175747), (143, 136419), (407, 47931), (429, 45473), (481, 40557), (1221, 15977), (1229, 15873), (1443, 13519), (3687, 5291)]