21064768

素因数分解:

$2^6\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1019}}^1$

素因数の和:1067

約数の個数: 56

約数和(自身を含む): 46634400

約数和(自身を除く): 25569632

約数列:

[1, 2, 4, 8, 16, 17, 19, 32, 34, 38, 64, 68, 76, 136, 152, 272, 304, 323, 544, 608, 646, 1019, 1088, 1216, 1292, 2038, 2584, 4076, 5168, 8152, 10336, 16304, 17323, 19361, 20672, 32608, 34646, 38722, 65216, 69292, 77444, 138584, 154888, 277168, 309776, 329137, 554336, 619552, 658274, 1108672, 1239104, 1316548, 2633096, 5266192, 10532384, 21064768]

約数ペア:

[(1, 21064768), (2, 10532384), (4, 5266192), (8, 2633096), (16, 1316548), (17, 1239104), (19, 1108672), (32, 658274), (34, 619552), (38, 554336), (64, 329137), (68, 309776), (76, 277168), (136, 154888), (152, 138584), (272, 77444), (304, 69292), (323, 65216), (544, 38722), (608, 34646), (646, 32608), (1019, 20672), (1088, 19361), (1216, 17323), (1292, 16304), (2038, 10336), (2584, 8152), (4076, 5168)]