618660

素因数分解:

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

素因数の和:513

約数の個数: 72

約数和(自身を含む): 2149056

約数和(自身を除く): 1530396

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 491, 630, 982, 1260, 1473, 1964, 2455, 2946, 3437, 4419, 4910, 5892, 6874, 7365, 8838, 9820, 10311, 13748, 14730, 17185, 17676, 20622, 22095, 29460, 30933, 34370, 41244, 44190, 51555, 61866, 68740, 88380, 103110, 123732, 154665, 206220, 309330, 618660]

約数ペア:

[(1, 618660), (2, 309330), (3, 206220), (4, 154665), (5, 123732), (6, 103110), (7, 88380), (9, 68740), (10, 61866), (12, 51555), (14, 44190), (15, 41244), (18, 34370), (20, 30933), (21, 29460), (28, 22095), (30, 20622), (35, 17676), (36, 17185), (42, 14730), (45, 13748), (60, 10311), (63, 9820), (70, 8838), (84, 7365), (90, 6874), (105, 5892), (126, 4910), (140, 4419), (180, 3437), (210, 2946), (252, 2455), (315, 1964), (420, 1473), (491, 1260), (630, 982)]