218043520

素因数分解:

$2^7\times 5^1\times {\mathrm{340693}}^1$

素因数の和:340712

約数の個数: 32

約数和(自身を含む): 521261820

約数和(自身を除く): 303218300

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 340693, 681386, 1362772, 1703465, 2725544, 3406930, 5451088, 6813860, 10902176, 13627720, 21804352, 27255440, 43608704, 54510880, 109021760, 218043520]

約数ペア:

[(1, 218043520), (2, 109021760), (4, 54510880), (5, 43608704), (8, 27255440), (10, 21804352), (16, 13627720), (20, 10902176), (32, 6813860), (40, 5451088), (64, 3406930), (80, 2725544), (128, 1703465), (160, 1362772), (320, 681386), (640, 340693)]