19671540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{6691}}^1$

素因数の和:6717

約数の個数: 72

約数和(自身を含む): 64082592

約数和(自身を除く): 44411052

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 6691, 13382, 20073, 26764, 33455, 40146, 46837, 66910, 80292, 93674, 100365, 133820, 140511, 187348, 200730, 234185, 281022, 327859, 401460, 468370, 562044, 655718, 702555, 936740, 983577, 1311436, 1405110, 1639295, 1967154, 2810220, 3278590, 3934308, 4917885, 6557180, 9835770, 19671540]

約数ペア:

[(1, 19671540), (2, 9835770), (3, 6557180), (4, 4917885), (5, 3934308), (6, 3278590), (7, 2810220), (10, 1967154), (12, 1639295), (14, 1405110), (15, 1311436), (20, 983577), (21, 936740), (28, 702555), (30, 655718), (35, 562044), (42, 468370), (49, 401460), (60, 327859), (70, 281022), (84, 234185), (98, 200730), (105, 187348), (140, 140511), (147, 133820), (196, 100365), (210, 93674), (245, 80292), (294, 66910), (420, 46837), (490, 40146), (588, 33455), (735, 26764), (980, 20073), (1470, 13382), (2940, 6691)]