12991020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{30931}}^1$

素因数の和:30950

約数の個数: 48

約数和(自身を含む): 41572608

約数和(自身を除く): 28581588

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, 30931, 61862, 92793, 123724, 154655, 185586, 216517, 309310, 371172, 433034, 463965, 618620, 649551, 866068, 927930, 1082585, 1299102, 1855860, 2165170, 2598204, 3247755, 4330340, 6495510, 12991020]

約数ペア:

[(1, 12991020), (2, 6495510), (3, 4330340), (4, 3247755), (5, 2598204), (6, 2165170), (7, 1855860), (10, 1299102), (12, 1082585), (14, 927930), (15, 866068), (20, 649551), (21, 618620), (28, 463965), (30, 433034), (35, 371172), (42, 309310), (60, 216517), (70, 185586), (84, 154655), (105, 123724), (140, 92793), (210, 61862), (420, 30931)]