21641072

素因数分解:

$2^4\times {\mathrm{503}}^1\times {\mathrm{2689}}^1$

素因数の和:3200

約数の個数: 20

約数和(自身を含む): 42028560

約数和(自身を除く): 20387488

約数列:

[1, 2, 4, 8, 16, 503, 1006, 2012, 2689, 4024, 5378, 8048, 10756, 21512, 43024, 1352567, 2705134, 5410268, 10820536, 21641072]

約数ペア:

[(1, 21641072), (2, 10820536), (4, 5410268), (8, 2705134), (16, 1352567), (503, 43024), (1006, 21512), (2012, 10756), (2689, 8048), (4024, 5378)]