28976272

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{139309}}^1$

素因数の和:139330

約数の個数: 20

約数和(自身を含む): 60460540

約数和(自身を除く): 31484268

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 139309, 278618, 557236, 1114472, 1811017, 2228944, 3622034, 7244068, 14488136, 28976272]

約数ペア:

[(1, 28976272), (2, 14488136), (4, 7244068), (8, 3622034), (13, 2228944), (16, 1811017), (26, 1114472), (52, 557236), (104, 278618), (208, 139309)]