4055440

素因数分解:

$2^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{311}}^1$

素因数の和:487

約数の個数: 40

約数和(自身を含む): 9517248

約数和(自身を除く): 5461808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 163, 311, 326, 622, 652, 815, 1244, 1304, 1555, 1630, 2488, 2608, 3110, 3260, 4976, 6220, 6520, 12440, 13040, 24880, 50693, 101386, 202772, 253465, 405544, 506930, 811088, 1013860, 2027720, 4055440]

約数ペア:

[(1, 4055440), (2, 2027720), (4, 1013860), (5, 811088), (8, 506930), (10, 405544), (16, 253465), (20, 202772), (40, 101386), (80, 50693), (163, 24880), (311, 13040), (326, 12440), (622, 6520), (652, 6220), (815, 4976), (1244, 3260), (1304, 3110), (1555, 2608), (1630, 2488)]