12888680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{191}}^1\times {\mathrm{241}}^1$

素因数の和:450

約数の個数: 64

約数和(自身を含む): 33454080

約数和(自身を除く): 20565400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 191, 241, 280, 382, 482, 764, 955, 964, 1205, 1337, 1528, 1687, 1910, 1928, 2410, 2674, 3374, 3820, 4820, 5348, 6685, 6748, 7640, 8435, 9640, 10696, 13370, 13496, 16870, 26740, 33740, 46031, 53480, 67480, 92062, 184124, 230155, 322217, 368248, 460310, 644434, 920620, 1288868, 1611085, 1841240, 2577736, 3222170, 6444340, 12888680]

約数ペア:

[(1, 12888680), (2, 6444340), (4, 3222170), (5, 2577736), (7, 1841240), (8, 1611085), (10, 1288868), (14, 920620), (20, 644434), (28, 460310), (35, 368248), (40, 322217), (56, 230155), (70, 184124), (140, 92062), (191, 67480), (241, 53480), (280, 46031), (382, 33740), (482, 26740), (764, 16870), (955, 13496), (964, 13370), (1205, 10696), (1337, 9640), (1528, 8435), (1687, 7640), (1910, 6748), (1928, 6685), (2410, 5348), (2674, 4820), (3374, 3820)]