21732865

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2971}}^1$

素因数の和:3013

約数の個数: 32

約数和(自身を含む): 34237440

約数和(自身を除く): 12504575

約数列:

[1, 5, 7, 11, 19, 35, 55, 77, 95, 133, 209, 385, 665, 1045, 1463, 2971, 7315, 14855, 20797, 32681, 56449, 103985, 163405, 228767, 282245, 395143, 620939, 1143835, 1975715, 3104695, 4346573, 21732865]

約数ペア:

[(1, 21732865), (5, 4346573), (7, 3104695), (11, 1975715), (19, 1143835), (35, 620939), (55, 395143), (77, 282245), (95, 228767), (133, 163405), (209, 103985), (385, 56449), (665, 32681), (1045, 20797), (1463, 14855), (2971, 7315)]