20954416

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{229}}^1$

素因数の和:306

約数の個数: 80

約数和(自身を含む): 50195200

約数和(自身を除く): 29240784

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 43, 56, 76, 86, 112, 133, 152, 172, 229, 266, 301, 304, 344, 458, 532, 602, 688, 817, 916, 1064, 1204, 1603, 1634, 1832, 2128, 2408, 3206, 3268, 3664, 4351, 4816, 5719, 6412, 6536, 8702, 9847, 11438, 12824, 13072, 17404, 19694, 22876, 25648, 30457, 34808, 39388, 45752, 60914, 68929, 69616, 78776, 91504, 121828, 137858, 157552, 187093, 243656, 275716, 374186, 487312, 551432, 748372, 1102864, 1309651, 1496744, 2619302, 2993488, 5238604, 10477208, 20954416]

約数ペア:

[(1, 20954416), (2, 10477208), (4, 5238604), (7, 2993488), (8, 2619302), (14, 1496744), (16, 1309651), (19, 1102864), (28, 748372), (38, 551432), (43, 487312), (56, 374186), (76, 275716), (86, 243656), (112, 187093), (133, 157552), (152, 137858), (172, 121828), (229, 91504), (266, 78776), (301, 69616), (304, 68929), (344, 60914), (458, 45752), (532, 39388), (602, 34808), (688, 30457), (817, 25648), (916, 22876), (1064, 19694), (1204, 17404), (1603, 13072), (1634, 12824), (1832, 11438), (2128, 9847), (2408, 8702), (3206, 6536), (3268, 6412), (3664, 5719), (4351, 4816)]