66464528

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{319541}}^1$

素因数の和:319562

約数の個数: 20

約数和(自身を含む): 138681228

約数和(自身を除く): 72216700

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 319541, 639082, 1278164, 2556328, 4154033, 5112656, 8308066, 16616132, 33232264, 66464528]

約数ペア:

[(1, 66464528), (2, 33232264), (4, 16616132), (8, 8308066), (13, 5112656), (16, 4154033), (26, 2556328), (52, 1278164), (104, 639082), (208, 319541)]