21283864

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{283}}^1$

素因数の和:392

約数の個数: 64

約数和(自身を含む): 49075200

約数和(自身を除く): 27791336

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 56, 68, 79, 119, 136, 158, 238, 283, 316, 476, 553, 566, 632, 952, 1106, 1132, 1343, 1981, 2212, 2264, 2686, 3962, 4424, 4811, 5372, 7924, 9401, 9622, 10744, 15848, 18802, 19244, 22357, 33677, 37604, 38488, 44714, 67354, 75208, 89428, 134708, 156499, 178856, 269416, 312998, 380069, 625996, 760138, 1251992, 1520276, 2660483, 3040552, 5320966, 10641932, 21283864]

約数ペア:

[(1, 21283864), (2, 10641932), (4, 5320966), (7, 3040552), (8, 2660483), (14, 1520276), (17, 1251992), (28, 760138), (34, 625996), (56, 380069), (68, 312998), (79, 269416), (119, 178856), (136, 156499), (158, 134708), (238, 89428), (283, 75208), (316, 67354), (476, 44714), (553, 38488), (566, 37604), (632, 33677), (952, 22357), (1106, 19244), (1132, 18802), (1343, 15848), (1981, 10744), (2212, 9622), (2264, 9401), (2686, 7924), (3962, 5372), (4424, 4811)]