81844220

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{15923}}^1$

素因数の和:16189

約数の個数: 24

約数和(自身を含む): 172552464

約数和(自身を除く): 90708244

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 5140, 15923, 31846, 63692, 79615, 159230, 318460, 4092211, 8184422, 16368844, 20461055, 40922110, 81844220]

約数ペア:

[(1, 81844220), (2, 40922110), (4, 20461055), (5, 16368844), (10, 8184422), (20, 4092211), (257, 318460), (514, 159230), (1028, 79615), (1285, 63692), (2570, 31846), (5140, 15923)]