21902915

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{307}}^1\times {\mathrm{751}}^1$

素因数の和:1082

約数の個数: 16

約数和(自身を含む): 27793920

約数和(自身を除く): 5891005

約数列:

[1, 5, 19, 95, 307, 751, 1535, 3755, 5833, 14269, 29165, 71345, 230557, 1152785, 4380583, 21902915]

約数ペア:

[(1, 21902915), (5, 4380583), (19, 1152785), (95, 230557), (307, 71345), (751, 29165), (1535, 14269), (3755, 5833)]