81454360

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{163}}^1$

素因数の和:249

約数の個数: 96

約数和(自身を含む): 205193520

約数和(自身を除く): 123739160

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 163, 248, 260, 310, 326, 403, 520, 620, 652, 806, 815, 961, 1240, 1304, 1612, 1630, 1922, 2015, 2119, 3224, 3260, 3844, 4030, 4238, 4805, 5053, 6520, 7688, 8060, 8476, 9610, 10106, 10595, 12493, 16120, 16952, 19220, 20212, 21190, 24986, 25265, 38440, 40424, 42380, 49972, 50530, 62465, 65689, 84760, 99944, 101060, 124930, 131378, 156643, 202120, 249860, 262756, 313286, 328445, 499720, 525512, 626572, 656890, 783215, 1253144, 1313780, 1566430, 2036359, 2627560, 3132860, 4072718, 6265720, 8145436, 10181795, 16290872, 20363590, 40727180, 81454360]

約数ペア:

[(1, 81454360), (2, 40727180), (4, 20363590), (5, 16290872), (8, 10181795), (10, 8145436), (13, 6265720), (20, 4072718), (26, 3132860), (31, 2627560), (40, 2036359), (52, 1566430), (62, 1313780), (65, 1253144), (104, 783215), (124, 656890), (130, 626572), (155, 525512), (163, 499720), (248, 328445), (260, 313286), (310, 262756), (326, 249860), (403, 202120), (520, 156643), (620, 131378), (652, 124930), (806, 101060), (815, 99944), (961, 84760), (1240, 65689), (1304, 62465), (1612, 50530), (1630, 49972), (1922, 42380), (2015, 40424), (2119, 38440), (3224, 25265), (3260, 24986), (3844, 21190), (4030, 20212), (4238, 19220), (4805, 16952), (5053, 16120), (6520, 12493), (7688, 10595), (8060, 10106), (8476, 9610)]