21009664

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{107}}^1$

素因数の和:195

約数の個数: 72

約数和(自身を含む): 46357920

約数和(自身を除く): 25348256

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 59, 64, 104, 107, 118, 128, 208, 214, 236, 256, 416, 428, 472, 767, 832, 856, 944, 1391, 1534, 1664, 1712, 1888, 2782, 3068, 3328, 3424, 3776, 5564, 6136, 6313, 6848, 7552, 11128, 12272, 12626, 13696, 15104, 22256, 24544, 25252, 27392, 44512, 49088, 50504, 82069, 89024, 98176, 101008, 164138, 178048, 196352, 202016, 328276, 356096, 404032, 656552, 808064, 1313104, 1616128, 2626208, 5252416, 10504832, 21009664]

約数ペア:

[(1, 21009664), (2, 10504832), (4, 5252416), (8, 2626208), (13, 1616128), (16, 1313104), (26, 808064), (32, 656552), (52, 404032), (59, 356096), (64, 328276), (104, 202016), (107, 196352), (118, 178048), (128, 164138), (208, 101008), (214, 98176), (236, 89024), (256, 82069), (416, 50504), (428, 49088), (472, 44512), (767, 27392), (832, 25252), (856, 24544), (944, 22256), (1391, 15104), (1534, 13696), (1664, 12626), (1712, 12272), (1888, 11128), (2782, 7552), (3068, 6848), (3328, 6313), (3424, 6136), (3776, 5564)]