19901052

素因数分解:

$2^2\times 3^4\times {\mathrm{239}}^1\times {\mathrm{257}}^1$

素因数の和:512

約数の個数: 60

約数和(自身を含む): 52446240

約数和(自身を除く): 32545188

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 239, 257, 324, 478, 514, 717, 771, 956, 1028, 1434, 1542, 2151, 2313, 2868, 3084, 4302, 4626, 6453, 6939, 8604, 9252, 12906, 13878, 19359, 20817, 25812, 27756, 38718, 41634, 61423, 77436, 83268, 122846, 184269, 245692, 368538, 552807, 737076, 1105614, 1658421, 2211228, 3316842, 4975263, 6633684, 9950526, 19901052]

約数ペア:

[(1, 19901052), (2, 9950526), (3, 6633684), (4, 4975263), (6, 3316842), (9, 2211228), (12, 1658421), (18, 1105614), (27, 737076), (36, 552807), (54, 368538), (81, 245692), (108, 184269), (162, 122846), (239, 83268), (257, 77436), (324, 61423), (478, 41634), (514, 38718), (717, 27756), (771, 25812), (956, 20817), (1028, 19359), (1434, 13878), (1542, 12906), (2151, 9252), (2313, 8604), (2868, 6939), (3084, 6453), (4302, 4626)]