21155264

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{541}}^1$

素因数の和:613

約数の個数: 56

約数和(自身を含む): 46256448

約数和(自身を除く): 25101184

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 47, 52, 64, 94, 104, 188, 208, 376, 416, 541, 611, 752, 832, 1082, 1222, 1504, 2164, 2444, 3008, 4328, 4888, 7033, 8656, 9776, 14066, 17312, 19552, 25427, 28132, 34624, 39104, 50854, 56264, 101708, 112528, 203416, 225056, 330551, 406832, 450112, 661102, 813664, 1322204, 1627328, 2644408, 5288816, 10577632, 21155264]

約数ペア:

[(1, 21155264), (2, 10577632), (4, 5288816), (8, 2644408), (13, 1627328), (16, 1322204), (26, 813664), (32, 661102), (47, 450112), (52, 406832), (64, 330551), (94, 225056), (104, 203416), (188, 112528), (208, 101708), (376, 56264), (416, 50854), (541, 39104), (611, 34624), (752, 28132), (832, 25427), (1082, 19552), (1222, 17312), (1504, 14066), (2164, 9776), (2444, 8656), (3008, 7033), (4328, 4888)]