21361491

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{2357}}^1$

素因数の和:2435

約数の個数: 24

約数和(自身を含む): 33106320

約数和(自身を除く): 11744829

約数列:

[1, 3, 9, 19, 53, 57, 159, 171, 477, 1007, 2357, 3021, 7071, 9063, 21213, 44783, 124921, 134349, 374763, 403047, 1124289, 2373499, 7120497, 21361491]

約数ペア:

[(1, 21361491), (3, 7120497), (9, 2373499), (19, 1124289), (53, 403047), (57, 374763), (159, 134349), (171, 124921), (477, 44783), (1007, 21213), (2357, 9063), (3021, 7071)]