1855980

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{491}}^1$

素因数の和:516

約数の個数: 96

約数和(自身を含む): 6612480

約数和(自身を除く): 4756500

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 140, 180, 189, 210, 252, 270, 315, 378, 420, 491, 540, 630, 756, 945, 982, 1260, 1473, 1890, 1964, 2455, 2946, 3437, 3780, 4419, 4910, 5892, 6874, 7365, 8838, 9820, 10311, 13257, 13748, 14730, 17185, 17676, 20622, 22095, 26514, 29460, 30933, 34370, 41244, 44190, 51555, 53028, 61866, 66285, 68740, 88380, 92799, 103110, 123732, 132570, 154665, 185598, 206220, 265140, 309330, 371196, 463995, 618660, 927990, 1855980]

約数ペア:

[(1, 1855980), (2, 927990), (3, 618660), (4, 463995), (5, 371196), (6, 309330), (7, 265140), (9, 206220), (10, 185598), (12, 154665), (14, 132570), (15, 123732), (18, 103110), (20, 92799), (21, 88380), (27, 68740), (28, 66285), (30, 61866), (35, 53028), (36, 51555), (42, 44190), (45, 41244), (54, 34370), (60, 30933), (63, 29460), (70, 26514), (84, 22095), (90, 20622), (105, 17676), (108, 17185), (126, 14730), (135, 13748), (140, 13257), (180, 10311), (189, 9820), (210, 8838), (252, 7365), (270, 6874), (315, 5892), (378, 4910), (420, 4419), (491, 3780), (540, 3437), (630, 2946), (756, 2455), (945, 1964), (982, 1890), (1260, 1473)]