20946880

素因数分解:

$2^6\times 5^1\times {\mathrm{67}}^1\times {\mathrm{977}}^1$

素因数の和:1061

約数の個数: 56

約数和(自身を含む): 50676048

約数和(自身を除く): 29729168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 67, 80, 134, 160, 268, 320, 335, 536, 670, 977, 1072, 1340, 1954, 2144, 2680, 3908, 4288, 4885, 5360, 7816, 9770, 10720, 15632, 19540, 21440, 31264, 39080, 62528, 65459, 78160, 130918, 156320, 261836, 312640, 327295, 523672, 654590, 1047344, 1309180, 2094688, 2618360, 4189376, 5236720, 10473440, 20946880]

約数ペア:

[(1, 20946880), (2, 10473440), (4, 5236720), (5, 4189376), (8, 2618360), (10, 2094688), (16, 1309180), (20, 1047344), (32, 654590), (40, 523672), (64, 327295), (67, 312640), (80, 261836), (134, 156320), (160, 130918), (268, 78160), (320, 65459), (335, 62528), (536, 39080), (670, 31264), (977, 21440), (1072, 19540), (1340, 15632), (1954, 10720), (2144, 9770), (2680, 7816), (3908, 5360), (4288, 4885)]