21148904

素因数分解:

$2^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{173}}^1$

素因数の和:282

約数の個数: 64

約数和(自身を含む): 47606400

約数和(自身を除く): 26457496

約数列:

[1, 2, 4, 7, 8, 14, 28, 37, 56, 59, 74, 118, 148, 173, 236, 259, 296, 346, 413, 472, 518, 692, 826, 1036, 1211, 1384, 1652, 2072, 2183, 2422, 3304, 4366, 4844, 6401, 8732, 9688, 10207, 12802, 15281, 17464, 20414, 25604, 30562, 40828, 44807, 51208, 61124, 71449, 81656, 89614, 122248, 142898, 179228, 285796, 358456, 377659, 571592, 755318, 1510636, 2643613, 3021272, 5287226, 10574452, 21148904]

約数ペア:

[(1, 21148904), (2, 10574452), (4, 5287226), (7, 3021272), (8, 2643613), (14, 1510636), (28, 755318), (37, 571592), (56, 377659), (59, 358456), (74, 285796), (118, 179228), (148, 142898), (173, 122248), (236, 89614), (259, 81656), (296, 71449), (346, 61124), (413, 51208), (472, 44807), (518, 40828), (692, 30562), (826, 25604), (1036, 20414), (1211, 17464), (1384, 15281), (1652, 12802), (2072, 10207), (2183, 9688), (2422, 8732), (3304, 6401), (4366, 4844)]