18390519

素因数分解:

$3^2\times 7^1\times {\mathrm{251}}^1\times {\mathrm{1163}}^1$

素因数の和:1427

約数の個数: 24

約数和(自身を含む): 30506112

約数和(自身を除く): 12115593

約数列:

[1, 3, 7, 9, 21, 63, 251, 753, 1163, 1757, 2259, 3489, 5271, 8141, 10467, 15813, 24423, 73269, 291913, 875739, 2043391, 2627217, 6130173, 18390519]

約数ペア:

[(1, 18390519), (3, 6130173), (7, 2627217), (9, 2043391), (21, 875739), (63, 291913), (251, 73269), (753, 24423), (1163, 15813), (1757, 10467), (2259, 8141), (3489, 5271)]