65394880

素因数分解:

$2^6\times 5^1\times {\mathrm{204359}}^1$

素因数の和:204376

約数の個数: 28

約数和(自身を含む): 155722320

約数和(自身を除く): 90327440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 204359, 408718, 817436, 1021795, 1634872, 2043590, 3269744, 4087180, 6539488, 8174360, 13078976, 16348720, 32697440, 65394880]

約数ペア:

[(1, 65394880), (2, 32697440), (4, 16348720), (5, 13078976), (8, 8174360), (10, 6539488), (16, 4087180), (20, 3269744), (32, 2043590), (40, 1634872), (64, 1021795), (80, 817436), (160, 408718), (320, 204359)]