20757760

素因数分解:

$2^8\times 5^1\times {\mathrm{16217}}^1$

素因数の和:16238

約数の個数: 36

約数和(自身を含む): 49724388

約数和(自身を除く): 28966628

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 16217, 32434, 64868, 81085, 129736, 162170, 259472, 324340, 518944, 648680, 1037888, 1297360, 2075776, 2594720, 4151552, 5189440, 10378880, 20757760]

約数ペア:

[(1, 20757760), (2, 10378880), (4, 5189440), (5, 4151552), (8, 2594720), (10, 2075776), (16, 1297360), (20, 1037888), (32, 648680), (40, 518944), (64, 324340), (80, 259472), (128, 162170), (160, 129736), (256, 81085), (320, 64868), (640, 32434), (1280, 16217)]