21847891

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{449}}^1$

素因数の和:678

約数の個数: 16

約数和(自身を含む): 24948000

約数和(自身を除く): 3100109

約数列:

[1, 13, 19, 197, 247, 449, 2561, 3743, 5837, 8531, 48659, 88453, 110903, 1149889, 1680607, 21847891]

約数ペア:

[(1, 21847891), (13, 1680607), (19, 1149889), (197, 110903), (247, 88453), (449, 48659), (2561, 8531), (3743, 5837)]