20743740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{6779}}^1$

素因数の和:6811

約数の個数: 72

約数和(自身を含む): 66633840

約数和(自身を除く): 45890100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 85, 90, 102, 153, 170, 180, 204, 255, 306, 340, 510, 612, 765, 1020, 1530, 3060, 6779, 13558, 20337, 27116, 33895, 40674, 61011, 67790, 81348, 101685, 115243, 122022, 135580, 203370, 230486, 244044, 305055, 345729, 406740, 460972, 576215, 610110, 691458, 1037187, 1152430, 1220220, 1382916, 1728645, 2074374, 2304860, 3457290, 4148748, 5185935, 6914580, 10371870, 20743740]

約数ペア:

[(1, 20743740), (2, 10371870), (3, 6914580), (4, 5185935), (5, 4148748), (6, 3457290), (9, 2304860), (10, 2074374), (12, 1728645), (15, 1382916), (17, 1220220), (18, 1152430), (20, 1037187), (30, 691458), (34, 610110), (36, 576215), (45, 460972), (51, 406740), (60, 345729), (68, 305055), (85, 244044), (90, 230486), (102, 203370), (153, 135580), (170, 122022), (180, 115243), (204, 101685), (255, 81348), (306, 67790), (340, 61011), (510, 40674), (612, 33895), (765, 27116), (1020, 20337), (1530, 13558), (3060, 6779)]