81646740

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{9257}}^1$

素因数の和:9286

約数の個数: 108

約数和(自身を含む): 288127476

約数和(自身を除く): 206480736

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 420, 441, 490, 588, 630, 735, 882, 980, 1260, 1470, 1764, 2205, 2940, 4410, 8820, 9257, 18514, 27771, 37028, 46285, 55542, 64799, 83313, 92570, 111084, 129598, 138855, 166626, 185140, 194397, 259196, 277710, 323995, 333252, 388794, 416565, 453593, 555420, 583191, 647990, 777588, 833130, 907186, 971985, 1166382, 1295980, 1360779, 1666260, 1814372, 1943970, 2267965, 2332764, 2721558, 2915955, 3887940, 4082337, 4535930, 5443116, 5831910, 6803895, 8164674, 9071860, 11663820, 13607790, 16329348, 20411685, 27215580, 40823370, 81646740]

約数ペア:

[(1, 81646740), (2, 40823370), (3, 27215580), (4, 20411685), (5, 16329348), (6, 13607790), (7, 11663820), (9, 9071860), (10, 8164674), (12, 6803895), (14, 5831910), (15, 5443116), (18, 4535930), (20, 4082337), (21, 3887940), (28, 2915955), (30, 2721558), (35, 2332764), (36, 2267965), (42, 1943970), (45, 1814372), (49, 1666260), (60, 1360779), (63, 1295980), (70, 1166382), (84, 971985), (90, 907186), (98, 833130), (105, 777588), (126, 647990), (140, 583191), (147, 555420), (180, 453593), (196, 416565), (210, 388794), (245, 333252), (252, 323995), (294, 277710), (315, 259196), (420, 194397), (441, 185140), (490, 166626), (588, 138855), (630, 129598), (735, 111084), (882, 92570), (980, 83313), (1260, 64799), (1470, 55542), (1764, 46285), (2205, 37028), (2940, 27771), (4410, 18514), (8820, 9257)]