31964140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{122939}}^1$

素因数の和:122961

約数の個数: 24

約数和(自身を含む): 72288720

約数和(自身を除く): 40324580

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 122939, 245878, 491756, 614695, 1229390, 1598207, 2458780, 3196414, 6392828, 7991035, 15982070, 31964140]

約数ペア:

[(1, 31964140), (2, 15982070), (4, 7991035), (5, 6392828), (10, 3196414), (13, 2458780), (20, 1598207), (26, 1229390), (52, 614695), (65, 491756), (130, 245878), (260, 122939)]