21154940

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{45989}}^1$

素因数の和:46021

約数の個数: 24

約数和(自身を含む): 46357920

約数和(自身を除く): 25202980

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 45989, 91978, 183956, 229945, 459890, 919780, 1057747, 2115494, 4230988, 5288735, 10577470, 21154940]

約数ペア:

[(1, 21154940), (2, 10577470), (4, 5288735), (5, 4230988), (10, 2115494), (20, 1057747), (23, 919780), (46, 459890), (92, 229945), (115, 183956), (230, 91978), (460, 45989)]