56971720

素因数分解:

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

素因数の和:686

約数の個数: 48

約数和(自身を含む): 138465180

約数和(自身を除く): 81493460

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 331, 520, 662, 1324, 1655, 2648, 3310, 4303, 6620, 8606, 13240, 17212, 21515, 34424, 43030, 86060, 109561, 172120, 219122, 438244, 547805, 876488, 1095610, 1424293, 2191220, 2848586, 4382440, 5697172, 7121465, 11394344, 14242930, 28485860, 56971720]

約数ペア:

[(1, 56971720), (2, 28485860), (4, 14242930), (5, 11394344), (8, 7121465), (10, 5697172), (13, 4382440), (20, 2848586), (26, 2191220), (40, 1424293), (52, 1095610), (65, 876488), (104, 547805), (130, 438244), (260, 219122), (331, 172120), (520, 109561), (662, 86060), (1324, 43030), (1655, 34424), (2648, 21515), (3310, 17212), (4303, 13240), (6620, 8606)]