31491180

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{2777}}^1$

素因数の和:2805

約数の個数: 120

約数和(自身を含む): 112942368

約数和(自身を除く): 81451188

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 81, 84, 90, 105, 108, 126, 135, 140, 162, 180, 189, 210, 252, 270, 315, 324, 378, 405, 420, 540, 567, 630, 756, 810, 945, 1134, 1260, 1620, 1890, 2268, 2777, 2835, 3780, 5554, 5670, 8331, 11108, 11340, 13885, 16662, 19439, 24993, 27770, 33324, 38878, 41655, 49986, 55540, 58317, 74979, 77756, 83310, 97195, 99972, 116634, 124965, 149958, 166620, 174951, 194390, 224937, 233268, 249930, 291585, 299916, 349902, 374895, 388780, 449874, 499860, 524853, 583170, 699804, 749790, 874755, 899748, 1049706, 1124685, 1166340, 1499580, 1574559, 1749510, 2099412, 2249370, 2624265, 3149118, 3499020, 4498740, 5248530, 6298236, 7872795, 10497060, 15745590, 31491180]

約数ペア:

[(1, 31491180), (2, 15745590), (3, 10497060), (4, 7872795), (5, 6298236), (6, 5248530), (7, 4498740), (9, 3499020), (10, 3149118), (12, 2624265), (14, 2249370), (15, 2099412), (18, 1749510), (20, 1574559), (21, 1499580), (27, 1166340), (28, 1124685), (30, 1049706), (35, 899748), (36, 874755), (42, 749790), (45, 699804), (54, 583170), (60, 524853), (63, 499860), (70, 449874), (81, 388780), (84, 374895), (90, 349902), (105, 299916), (108, 291585), (126, 249930), (135, 233268), (140, 224937), (162, 194390), (180, 174951), (189, 166620), (210, 149958), (252, 124965), (270, 116634), (315, 99972), (324, 97195), (378, 83310), (405, 77756), (420, 74979), (540, 58317), (567, 55540), (630, 49986), (756, 41655), (810, 38878), (945, 33324), (1134, 27770), (1260, 24993), (1620, 19439), (1890, 16662), (2268, 13885), (2777, 11340), (2835, 11108), (3780, 8331), (5554, 5670)]