21980517

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{373}}^1\times {\mathrm{1511}}^1$

素因数の和:1900

約数の個数: 16

約数和(自身を含む): 31667328

約数和(自身を除く): 9686811

約数列:

[1, 3, 13, 39, 373, 1119, 1511, 4533, 4849, 14547, 19643, 58929, 563603, 1690809, 7326839, 21980517]

約数ペア:

[(1, 21980517), (3, 7326839), (13, 1690809), (39, 563603), (373, 58929), (1119, 19643), (1511, 14547), (4533, 4849)]