18478821

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{163}}^1$

素因数の和:273

約数の個数: 32

約数和(自身を含む): 27205632

約数和(自身を除く): 8726811

約数列:

[1, 3, 23, 31, 53, 69, 93, 159, 163, 489, 713, 1219, 1643, 2139, 3657, 3749, 4929, 5053, 8639, 11247, 15159, 25917, 37789, 113367, 116219, 198697, 267809, 348657, 596091, 803427, 6159607, 18478821]

約数ペア:

[(1, 18478821), (3, 6159607), (23, 803427), (31, 596091), (53, 348657), (69, 267809), (93, 198697), (159, 116219), (163, 113367), (489, 37789), (713, 25917), (1219, 15159), (1643, 11247), (2139, 8639), (3657, 5053), (3749, 4929)]