20782980

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{12829}}^1$

素因数の和:12850

約数の個数: 60

約数和(自身を含む): 65202060

約数和(自身を除く): 44419080

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 12829, 25658, 38487, 51316, 64145, 76974, 115461, 128290, 153948, 192435, 230922, 256580, 346383, 384870, 461844, 577305, 692766, 769740, 1039149, 1154610, 1385532, 1731915, 2078298, 2309220, 3463830, 4156596, 5195745, 6927660, 10391490, 20782980]

約数ペア:

[(1, 20782980), (2, 10391490), (3, 6927660), (4, 5195745), (5, 4156596), (6, 3463830), (9, 2309220), (10, 2078298), (12, 1731915), (15, 1385532), (18, 1154610), (20, 1039149), (27, 769740), (30, 692766), (36, 577305), (45, 461844), (54, 384870), (60, 346383), (81, 256580), (90, 230922), (108, 192435), (135, 153948), (162, 128290), (180, 115461), (270, 76974), (324, 64145), (405, 51316), (540, 38487), (810, 25658), (1620, 12829)]