21734020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{1283}}^1$

素因数の和:1321

約数の個数: 72

約数和(自身を含む): 57379392

約数和(自身を除く): 35645372

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 121, 140, 154, 220, 242, 308, 385, 484, 605, 770, 847, 1210, 1283, 1540, 1694, 2420, 2566, 3388, 4235, 5132, 6415, 8470, 8981, 12830, 14113, 16940, 17962, 25660, 28226, 35924, 44905, 56452, 70565, 89810, 98791, 141130, 155243, 179620, 197582, 282260, 310486, 395164, 493955, 620972, 776215, 987910, 1086701, 1552430, 1975820, 2173402, 3104860, 4346804, 5433505, 10867010, 21734020]

約数ペア:

[(1, 21734020), (2, 10867010), (4, 5433505), (5, 4346804), (7, 3104860), (10, 2173402), (11, 1975820), (14, 1552430), (20, 1086701), (22, 987910), (28, 776215), (35, 620972), (44, 493955), (55, 395164), (70, 310486), (77, 282260), (110, 197582), (121, 179620), (140, 155243), (154, 141130), (220, 98791), (242, 89810), (308, 70565), (385, 56452), (484, 44905), (605, 35924), (770, 28226), (847, 25660), (1210, 17962), (1283, 16940), (1540, 14113), (1694, 12830), (2420, 8981), (2566, 8470), (3388, 6415), (4235, 5132)]