21957902

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{281}}^1\times {\mathrm{439}}^1$

素因数の和:811

約数の個数: 16

約数和(自身を含む): 33501600

約数和(自身を除く): 11543698

約数列:

[1, 2, 89, 178, 281, 439, 562, 878, 25009, 39071, 50018, 78142, 123359, 246718, 10978951, 21957902]

約数ペア:

[(1, 21957902), (2, 10978951), (89, 246718), (178, 123359), (281, 78142), (439, 50018), (562, 39071), (878, 25009)]