20420456

素因数分解:

$2^3\times 7^2\times {\mathrm{113}}^1\times {\mathrm{461}}^1$

素因数の和:594

約数の個数: 48

約数和(自身を含む): 45031140

約数和(自身を除く): 24610684

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 113, 196, 226, 392, 452, 461, 791, 904, 922, 1582, 1844, 3164, 3227, 3688, 5537, 6328, 6454, 11074, 12908, 22148, 22589, 25816, 44296, 45178, 52093, 90356, 104186, 180712, 208372, 364651, 416744, 729302, 1458604, 2552557, 2917208, 5105114, 10210228, 20420456]

約数ペア:

[(1, 20420456), (2, 10210228), (4, 5105114), (7, 2917208), (8, 2552557), (14, 1458604), (28, 729302), (49, 416744), (56, 364651), (98, 208372), (113, 180712), (196, 104186), (226, 90356), (392, 52093), (452, 45178), (461, 44296), (791, 25816), (904, 22589), (922, 22148), (1582, 12908), (1844, 11074), (3164, 6454), (3227, 6328), (3688, 5537)]