21295278

素因数分解:

$2^1\times 3^3\times {\mathrm{394357}}^1$

素因数の和:394368

約数の個数: 16

約数和(自身を含む): 47322960

約数和(自身を除く): 26027682

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 394357, 788714, 1183071, 2366142, 3549213, 7098426, 10647639, 21295278]

約数ペア:

[(1, 21295278), (2, 10647639), (3, 7098426), (6, 3549213), (9, 2366142), (18, 1183071), (27, 788714), (54, 394357)]