20830880

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{2657}}^1$

素因数の和:2686

約数の個数: 72

約数和(自身を含む): 57269268

約数和(自身を除く): 36438388

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 2657, 3920, 5314, 7840, 10628, 13285, 18599, 21256, 26570, 37198, 42512, 53140, 74396, 85024, 92995, 106280, 130193, 148792, 185990, 212560, 260386, 297584, 371980, 425120, 520772, 595168, 650965, 743960, 1041544, 1301930, 1487920, 2083088, 2603860, 2975840, 4166176, 5207720, 10415440, 20830880]

約数ペア:

[(1, 20830880), (2, 10415440), (4, 5207720), (5, 4166176), (7, 2975840), (8, 2603860), (10, 2083088), (14, 1487920), (16, 1301930), (20, 1041544), (28, 743960), (32, 650965), (35, 595168), (40, 520772), (49, 425120), (56, 371980), (70, 297584), (80, 260386), (98, 212560), (112, 185990), (140, 148792), (160, 130193), (196, 106280), (224, 92995), (245, 85024), (280, 74396), (392, 53140), (490, 42512), (560, 37198), (784, 26570), (980, 21256), (1120, 18599), (1568, 13285), (1960, 10628), (2657, 7840), (3920, 5314)]