20825196

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{107}}^1\times {\mathrm{331}}^1$

素因数の和:459

約数の個数: 72

約数和(自身を含む): 57226176

約数和(自身を除く): 36400980

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 107, 147, 196, 214, 294, 321, 331, 428, 588, 642, 662, 749, 993, 1284, 1324, 1498, 1986, 2247, 2317, 2996, 3972, 4494, 4634, 5243, 6951, 8988, 9268, 10486, 13902, 15729, 16219, 20972, 27804, 31458, 32438, 35417, 48657, 62916, 64876, 70834, 97314, 106251, 141668, 194628, 212502, 247919, 425004, 495838, 743757, 991676, 1487514, 1735433, 2975028, 3470866, 5206299, 6941732, 10412598, 20825196]

約数ペア:

[(1, 20825196), (2, 10412598), (3, 6941732), (4, 5206299), (6, 3470866), (7, 2975028), (12, 1735433), (14, 1487514), (21, 991676), (28, 743757), (42, 495838), (49, 425004), (84, 247919), (98, 212502), (107, 194628), (147, 141668), (196, 106251), (214, 97314), (294, 70834), (321, 64876), (331, 62916), (428, 48657), (588, 35417), (642, 32438), (662, 31458), (749, 27804), (993, 20972), (1284, 16219), (1324, 15729), (1498, 13902), (1986, 10486), (2247, 9268), (2317, 8988), (2996, 6951), (3972, 5243), (4494, 4634)]