21185248

素因数分解:

$2^5\times 7^2\times {\mathrm{59}}^1\times {\mathrm{229}}^1$

素因数の和:312

約数の個数: 72

約数和(自身を含む): 49555800

約数和(自身を除く): 28370552

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 59, 98, 112, 118, 196, 224, 229, 236, 392, 413, 458, 472, 784, 826, 916, 944, 1568, 1603, 1652, 1832, 1888, 2891, 3206, 3304, 3664, 5782, 6412, 6608, 7328, 11221, 11564, 12824, 13216, 13511, 22442, 23128, 25648, 27022, 44884, 46256, 51296, 54044, 89768, 92512, 94577, 108088, 179536, 189154, 216176, 359072, 378308, 432352, 662039, 756616, 1324078, 1513232, 2648156, 3026464, 5296312, 10592624, 21185248]

約数ペア:

[(1, 21185248), (2, 10592624), (4, 5296312), (7, 3026464), (8, 2648156), (14, 1513232), (16, 1324078), (28, 756616), (32, 662039), (49, 432352), (56, 378308), (59, 359072), (98, 216176), (112, 189154), (118, 179536), (196, 108088), (224, 94577), (229, 92512), (236, 89768), (392, 54044), (413, 51296), (458, 46256), (472, 44884), (784, 27022), (826, 25648), (916, 23128), (944, 22442), (1568, 13511), (1603, 13216), (1652, 12824), (1832, 11564), (1888, 11221), (2891, 7328), (3206, 6608), (3304, 6412), (3664, 5782)]