21503390

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{93493}}^1$

素因数の和:93523

約数の個数: 16

約数和(自身を含む): 40389408

約数和(自身を除く): 18886018

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 93493, 186986, 467465, 934930, 2150339, 4300678, 10751695, 21503390]

約数ペア:

[(1, 21503390), (2, 10751695), (5, 4300678), (10, 2150339), (23, 934930), (46, 467465), (115, 186986), (230, 93493)]