17890551

素因数分解:

$3^4\times 7^1\times {\mathrm{139}}^1\times {\mathrm{227}}^1$

素因数の和:385

約数の個数: 40

約数和(自身を含む): 30898560

約数和(自身を除く): 13008009

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 139, 189, 227, 417, 567, 681, 973, 1251, 1589, 2043, 2919, 3753, 4767, 6129, 8757, 11259, 14301, 18387, 26271, 31553, 42903, 78813, 94659, 128709, 220871, 283977, 662613, 851931, 1987839, 2555793, 5963517, 17890551]

約数ペア:

[(1, 17890551), (3, 5963517), (7, 2555793), (9, 1987839), (21, 851931), (27, 662613), (63, 283977), (81, 220871), (139, 128709), (189, 94659), (227, 78813), (417, 42903), (567, 31553), (681, 26271), (973, 18387), (1251, 14301), (1589, 11259), (2043, 8757), (2919, 6129), (3753, 4767)]