31195780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{431}}^1$

素因数の和:505

約数の個数: 96

約数和(自身を含む): 83607552

約数和(自身を除く): 52411772

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 47, 55, 70, 77, 94, 110, 140, 154, 188, 220, 235, 308, 329, 385, 431, 470, 517, 658, 770, 862, 940, 1034, 1316, 1540, 1645, 1724, 2068, 2155, 2585, 3017, 3290, 3619, 4310, 4741, 5170, 6034, 6580, 7238, 8620, 9482, 10340, 12068, 14476, 15085, 18095, 18964, 20257, 23705, 30170, 33187, 36190, 40514, 47410, 60340, 66374, 72380, 81028, 94820, 101285, 132748, 141799, 165935, 202570, 222827, 283598, 331870, 405140, 445654, 567196, 663740, 708995, 891308, 1114135, 1417990, 1559789, 2228270, 2835980, 3119578, 4456540, 6239156, 7798945, 15597890, 31195780]

約数ペア:

[(1, 31195780), (2, 15597890), (4, 7798945), (5, 6239156), (7, 4456540), (10, 3119578), (11, 2835980), (14, 2228270), (20, 1559789), (22, 1417990), (28, 1114135), (35, 891308), (44, 708995), (47, 663740), (55, 567196), (70, 445654), (77, 405140), (94, 331870), (110, 283598), (140, 222827), (154, 202570), (188, 165935), (220, 141799), (235, 132748), (308, 101285), (329, 94820), (385, 81028), (431, 72380), (470, 66374), (517, 60340), (658, 47410), (770, 40514), (862, 36190), (940, 33187), (1034, 30170), (1316, 23705), (1540, 20257), (1645, 18964), (1724, 18095), (2068, 15085), (2155, 14476), (2585, 12068), (3017, 10340), (3290, 9482), (3619, 8620), (4310, 7238), (4741, 6580), (5170, 6034)]