21707028

素因数分解:

$2^2\times 3^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{563}}^1$

素因数の和:603

約数の個数: 120

約数和(自身を含む): 68789952

約数和(自身を除く): 47082924

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 17, 18, 21, 27, 28, 34, 36, 42, 51, 54, 63, 68, 81, 84, 102, 108, 119, 126, 153, 162, 189, 204, 238, 252, 306, 324, 357, 378, 459, 476, 563, 567, 612, 714, 756, 918, 1071, 1126, 1134, 1377, 1428, 1689, 1836, 2142, 2252, 2268, 2754, 3213, 3378, 3941, 4284, 5067, 5508, 6426, 6756, 7882, 9571, 9639, 10134, 11823, 12852, 15201, 15764, 19142, 19278, 20268, 23646, 28713, 30402, 35469, 38284, 38556, 45603, 47292, 57426, 60804, 66997, 70938, 86139, 91206, 106407, 114852, 133994, 141876, 172278, 182412, 200991, 212814, 258417, 267988, 319221, 344556, 401982, 425628, 516834, 602973, 638442, 775251, 803964, 1033668, 1205946, 1276884, 1550502, 1808919, 2411892, 3101004, 3617838, 5426757, 7235676, 10853514, 21707028]

約数ペア:

[(1, 21707028), (2, 10853514), (3, 7235676), (4, 5426757), (6, 3617838), (7, 3101004), (9, 2411892), (12, 1808919), (14, 1550502), (17, 1276884), (18, 1205946), (21, 1033668), (27, 803964), (28, 775251), (34, 638442), (36, 602973), (42, 516834), (51, 425628), (54, 401982), (63, 344556), (68, 319221), (81, 267988), (84, 258417), (102, 212814), (108, 200991), (119, 182412), (126, 172278), (153, 141876), (162, 133994), (189, 114852), (204, 106407), (238, 91206), (252, 86139), (306, 70938), (324, 66997), (357, 60804), (378, 57426), (459, 47292), (476, 45603), (563, 38556), (567, 38284), (612, 35469), (714, 30402), (756, 28713), (918, 23646), (1071, 20268), (1126, 19278), (1134, 19142), (1377, 15764), (1428, 15201), (1689, 12852), (1836, 11823), (2142, 10134), (2252, 9639), (2268, 9571), (2754, 7882), (3213, 6756), (3378, 6426), (3941, 5508), (4284, 5067)]