21177819

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{571}}^1$

素因数の和:907

約数の個数: 24

約数和(自身を含む): 33105072

約数和(自身を除く): 11927253

約数列:

[1, 3, 9, 13, 39, 117, 317, 571, 951, 1713, 2853, 4121, 5139, 7423, 12363, 22269, 37089, 66807, 181007, 543021, 1629063, 2353091, 7059273, 21177819]

約数ペア:

[(1, 21177819), (3, 7059273), (9, 2353091), (13, 1629063), (39, 543021), (117, 181007), (317, 66807), (571, 37089), (951, 22269), (1713, 12363), (2853, 7423), (4121, 5139)]