21898381

素因数分解:

${\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{149}}^1$

素因数の和:308

約数の個数: 16

約数和(自身を含む): 23328000

約数和(自身を除く): 1429619

約数列:

[1, 47, 53, 59, 149, 2491, 2773, 3127, 7003, 7897, 8791, 146969, 371159, 413177, 465923, 21898381]

約数ペア:

[(1, 21898381), (47, 465923), (53, 413177), (59, 371159), (149, 146969), (2491, 8791), (2773, 7897), (3127, 7003)]