20691524

素因数分解:

$2^2\times 7^2\times {\mathrm{229}}^1\times {\mathrm{461}}^1$

素因数の和:708

約数の個数: 36

約数和(自身を含む): 42397740

約数和(自身を除く): 21706216

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 229, 458, 461, 916, 922, 1603, 1844, 3206, 3227, 6412, 6454, 11221, 12908, 22442, 22589, 44884, 45178, 90356, 105569, 211138, 422276, 738983, 1477966, 2955932, 5172881, 10345762, 20691524]

約数ペア:

[(1, 20691524), (2, 10345762), (4, 5172881), (7, 2955932), (14, 1477966), (28, 738983), (49, 422276), (98, 211138), (196, 105569), (229, 90356), (458, 45178), (461, 44884), (916, 22589), (922, 22442), (1603, 12908), (1844, 11221), (3206, 6454), (3227, 6412)]