21438352

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{103069}}^1$

素因数の和:103090

約数の個数: 20

約数和(自身を含む): 44732380

約数和(自身を除く): 23294028

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 103069, 206138, 412276, 824552, 1339897, 1649104, 2679794, 5359588, 10719176, 21438352]

約数ペア:

[(1, 21438352), (2, 10719176), (4, 5359588), (8, 2679794), (13, 1649104), (16, 1339897), (26, 824552), (52, 412276), (104, 206138), (208, 103069)]