1247820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{2971}}^1$

素因数の和:2990

約数の個数: 48

約数和(自身を含む): 3994368

約数和(自身を除く): 2746548

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 2971, 5942, 8913, 11884, 14855, 17826, 20797, 29710, 35652, 41594, 44565, 59420, 62391, 83188, 89130, 103985, 124782, 178260, 207970, 249564, 311955, 415940, 623910, 1247820]

約数ペア:

[(1, 1247820), (2, 623910), (3, 415940), (4, 311955), (5, 249564), (6, 207970), (7, 178260), (10, 124782), (12, 103985), (14, 89130), (15, 83188), (20, 62391), (21, 59420), (28, 44565), (30, 41594), (35, 35652), (42, 29710), (60, 20797), (70, 17826), (84, 14855), (105, 11884), (140, 8913), (210, 5942), (420, 2971)]