21345156

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1193}}^1$

素因数の和:1281

約数の個数: 72

約数和(自身を含む): 62584704

約数和(自身を除く): 41239548

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 71, 84, 126, 142, 213, 252, 284, 426, 497, 639, 852, 994, 1193, 1278, 1491, 1988, 2386, 2556, 2982, 3579, 4473, 4772, 5964, 7158, 8351, 8946, 10737, 14316, 16702, 17892, 21474, 25053, 33404, 42948, 50106, 75159, 84703, 100212, 150318, 169406, 254109, 300636, 338812, 508218, 592921, 762327, 1016436, 1185842, 1524654, 1778763, 2371684, 3049308, 3557526, 5336289, 7115052, 10672578, 21345156]

約数ペア:

[(1, 21345156), (2, 10672578), (3, 7115052), (4, 5336289), (6, 3557526), (7, 3049308), (9, 2371684), (12, 1778763), (14, 1524654), (18, 1185842), (21, 1016436), (28, 762327), (36, 592921), (42, 508218), (63, 338812), (71, 300636), (84, 254109), (126, 169406), (142, 150318), (213, 100212), (252, 84703), (284, 75159), (426, 50106), (497, 42948), (639, 33404), (852, 25053), (994, 21474), (1193, 17892), (1278, 16702), (1491, 14316), (1988, 10737), (2386, 8946), (2556, 8351), (2982, 7158), (3579, 5964), (4473, 4772)]