20999244

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{503}}^1$

素因数の和:595

約数の個数: 72

約数和(自身を含む): 57915648

約数和(自身を除く): 36916404

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 71, 84, 98, 142, 147, 196, 213, 284, 294, 426, 497, 503, 588, 852, 994, 1006, 1491, 1509, 1988, 2012, 2982, 3018, 3479, 3521, 5964, 6036, 6958, 7042, 10437, 10563, 13916, 14084, 20874, 21126, 24647, 35713, 41748, 42252, 49294, 71426, 73941, 98588, 107139, 142852, 147882, 214278, 249991, 295764, 428556, 499982, 749973, 999964, 1499946, 1749937, 2999892, 3499874, 5249811, 6999748, 10499622, 20999244]

約数ペア:

[(1, 20999244), (2, 10499622), (3, 6999748), (4, 5249811), (6, 3499874), (7, 2999892), (12, 1749937), (14, 1499946), (21, 999964), (28, 749973), (42, 499982), (49, 428556), (71, 295764), (84, 249991), (98, 214278), (142, 147882), (147, 142852), (196, 107139), (213, 98588), (284, 73941), (294, 71426), (426, 49294), (497, 42252), (503, 41748), (588, 35713), (852, 24647), (994, 21126), (1006, 20874), (1491, 14084), (1509, 13916), (1988, 10563), (2012, 10437), (2982, 7042), (3018, 6958), (3479, 6036), (3521, 5964)]