21135954

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1$

素因数の和:152

約数の個数: 96

約数和(自身を含む): 53023680

約数和(自身を除く): 31887726

約数列:

[1, 2, 3, 6, 7, 14, 21, 29, 37, 42, 49, 58, 67, 74, 87, 98, 111, 134, 147, 174, 201, 203, 222, 259, 294, 402, 406, 469, 518, 609, 777, 938, 1073, 1218, 1407, 1421, 1554, 1813, 1943, 2146, 2479, 2814, 2842, 3219, 3283, 3626, 3886, 4263, 4958, 5439, 5829, 6438, 6566, 7437, 7511, 8526, 9849, 10878, 11658, 13601, 14874, 15022, 17353, 19698, 22533, 27202, 34706, 40803, 45066, 52059, 52577, 71891, 81606, 95207, 104118, 105154, 121471, 143782, 157731, 190414, 215673, 242942, 285621, 315462, 364413, 431346, 503237, 571242, 728826, 1006474, 1509711, 3019422, 3522659, 7045318, 10567977, 21135954]

約数ペア:

[(1, 21135954), (2, 10567977), (3, 7045318), (6, 3522659), (7, 3019422), (14, 1509711), (21, 1006474), (29, 728826), (37, 571242), (42, 503237), (49, 431346), (58, 364413), (67, 315462), (74, 285621), (87, 242942), (98, 215673), (111, 190414), (134, 157731), (147, 143782), (174, 121471), (201, 105154), (203, 104118), (222, 95207), (259, 81606), (294, 71891), (402, 52577), (406, 52059), (469, 45066), (518, 40803), (609, 34706), (777, 27202), (938, 22533), (1073, 19698), (1218, 17353), (1407, 15022), (1421, 14874), (1554, 13601), (1813, 11658), (1943, 10878), (2146, 9849), (2479, 8526), (2814, 7511), (2842, 7437), (3219, 6566), (3283, 6438), (3626, 5829), (3886, 5439), (4263, 4958)]