161221328

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{325043}}^1$

素因数の和:325082

約数の個数: 20

約数和(自身を含む): 322443648

約数和(自身を除く): 161222320

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 325043, 650086, 1300172, 2600344, 5200688, 10076333, 20152666, 40305332, 80610664, 161221328]

約数ペア:

[(1, 161221328), (2, 80610664), (4, 40305332), (8, 20152666), (16, 10076333), (31, 5200688), (62, 2600344), (124, 1300172), (248, 650086), (496, 325043)]