21613696

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{419}}^1$

素因数の和:477

約数の個数: 64

約数和(自身を含む): 47980800

約数和(自身を除く): 26367104

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 64, 104, 124, 128, 208, 248, 403, 416, 419, 496, 806, 832, 838, 992, 1612, 1664, 1676, 1984, 3224, 3352, 3968, 5447, 6448, 6704, 10894, 12896, 12989, 13408, 21788, 25792, 25978, 26816, 43576, 51584, 51956, 53632, 87152, 103912, 168857, 174304, 207824, 337714, 348608, 415648, 675428, 697216, 831296, 1350856, 1662592, 2701712, 5403424, 10806848, 21613696]

約数ペア:

[(1, 21613696), (2, 10806848), (4, 5403424), (8, 2701712), (13, 1662592), (16, 1350856), (26, 831296), (31, 697216), (32, 675428), (52, 415648), (62, 348608), (64, 337714), (104, 207824), (124, 174304), (128, 168857), (208, 103912), (248, 87152), (403, 53632), (416, 51956), (419, 51584), (496, 43576), (806, 26816), (832, 25978), (838, 25792), (992, 21788), (1612, 13408), (1664, 12989), (1676, 12896), (1984, 10894), (3224, 6704), (3352, 6448), (3968, 5447)]