21968394

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:275

約数の個数: 64

約数和(自身を含む): 52254720

約数和(自身を除く): 30286326

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 53, 71, 106, 139, 142, 159, 213, 278, 318, 371, 417, 426, 497, 742, 834, 973, 994, 1113, 1491, 1946, 2226, 2919, 2982, 3763, 5838, 7367, 7526, 9869, 11289, 14734, 19738, 22101, 22578, 26341, 29607, 44202, 51569, 52682, 59214, 69083, 79023, 103138, 138166, 154707, 158046, 207249, 309414, 414498, 523057, 1046114, 1569171, 3138342, 3661399, 7322798, 10984197, 21968394]

約数ペア:

[(1, 21968394), (2, 10984197), (3, 7322798), (6, 3661399), (7, 3138342), (14, 1569171), (21, 1046114), (42, 523057), (53, 414498), (71, 309414), (106, 207249), (139, 158046), (142, 154707), (159, 138166), (213, 103138), (278, 79023), (318, 69083), (371, 59214), (417, 52682), (426, 51569), (497, 44202), (742, 29607), (834, 26341), (973, 22578), (994, 22101), (1113, 19738), (1491, 14734), (1946, 11289), (2226, 9869), (2919, 7526), (2982, 7367), (3763, 5838)]