31153720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{331}}^1$

素因数の和:536

約数の個数: 64

約数和(自身を含む): 76134240

約数和(自身を除く): 44980520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 181, 260, 331, 362, 520, 662, 724, 905, 1324, 1448, 1655, 1810, 2353, 2648, 3310, 3620, 4303, 4706, 6620, 7240, 8606, 9412, 11765, 13240, 17212, 18824, 21515, 23530, 34424, 43030, 47060, 59911, 86060, 94120, 119822, 172120, 239644, 299555, 479288, 599110, 778843, 1198220, 1557686, 2396440, 3115372, 3894215, 6230744, 7788430, 15576860, 31153720]

約数ペア:

[(1, 31153720), (2, 15576860), (4, 7788430), (5, 6230744), (8, 3894215), (10, 3115372), (13, 2396440), (20, 1557686), (26, 1198220), (40, 778843), (52, 599110), (65, 479288), (104, 299555), (130, 239644), (181, 172120), (260, 119822), (331, 94120), (362, 86060), (520, 59911), (662, 47060), (724, 43030), (905, 34424), (1324, 23530), (1448, 21515), (1655, 18824), (1810, 17212), (2353, 13240), (2648, 11765), (3310, 9412), (3620, 8606), (4303, 7240), (4706, 6620)]