21666688

素因数分解:

$2^7\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{151}}^1$

素因数の和:243

約数の個数: 64

約数和(自身を含む): 46512000

約数和(自身を除く): 24845312

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 59, 64, 76, 118, 128, 151, 152, 236, 302, 304, 472, 604, 608, 944, 1121, 1208, 1216, 1888, 2242, 2416, 2432, 2869, 3776, 4484, 4832, 5738, 7552, 8909, 8968, 9664, 11476, 17818, 17936, 19328, 22952, 35636, 35872, 45904, 71272, 71744, 91808, 142544, 143488, 169271, 183616, 285088, 338542, 367232, 570176, 677084, 1140352, 1354168, 2708336, 5416672, 10833344, 21666688]

約数ペア:

[(1, 21666688), (2, 10833344), (4, 5416672), (8, 2708336), (16, 1354168), (19, 1140352), (32, 677084), (38, 570176), (59, 367232), (64, 338542), (76, 285088), (118, 183616), (128, 169271), (151, 143488), (152, 142544), (236, 91808), (302, 71744), (304, 71272), (472, 45904), (604, 35872), (608, 35636), (944, 22952), (1121, 19328), (1208, 17936), (1216, 17818), (1888, 11476), (2242, 9664), (2416, 8968), (2432, 8909), (2869, 7552), (3776, 5738), (4484, 4832)]