68940680

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{331}}^1$

素因数の和:510

約数の個数: 64

約数和(自身を含む): 160634880

約数和(自身を除く): 91694200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 127, 164, 205, 254, 328, 331, 410, 508, 635, 662, 820, 1016, 1270, 1324, 1640, 1655, 2540, 2648, 3310, 5080, 5207, 6620, 10414, 13240, 13571, 20828, 26035, 27142, 41656, 42037, 52070, 54284, 67855, 84074, 104140, 108568, 135710, 168148, 208280, 210185, 271420, 336296, 420370, 542840, 840740, 1681480, 1723517, 3447034, 6894068, 8617585, 13788136, 17235170, 34470340, 68940680]

約数ペア:

[(1, 68940680), (2, 34470340), (4, 17235170), (5, 13788136), (8, 8617585), (10, 6894068), (20, 3447034), (40, 1723517), (41, 1681480), (82, 840740), (127, 542840), (164, 420370), (205, 336296), (254, 271420), (328, 210185), (331, 208280), (410, 168148), (508, 135710), (635, 108568), (662, 104140), (820, 84074), (1016, 67855), (1270, 54284), (1324, 52070), (1640, 42037), (1655, 41656), (2540, 27142), (2648, 26035), (3310, 20828), (5080, 13571), (5207, 13240), (6620, 10414)]