20871318

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{267581}}^1$

素因数の和:267599

約数の個数: 16

約数和(自身を含む): 44953776

約数和(自身を除く): 24082458

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 267581, 535162, 802743, 1605486, 3478553, 6957106, 10435659, 20871318]

約数ペア:

[(1, 20871318), (2, 10435659), (3, 6957106), (6, 3478553), (13, 1605486), (26, 802743), (39, 535162), (78, 267581)]