21445072

素因数分解:

$2^4\times {\mathrm{11}}^3\times {\mathrm{19}}^1\times {\mathrm{53}}^1$

素因数の和:113

約数の個数: 80

約数和(自身を含む): 49014720

約数和(自身を除く): 27569648

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 38, 44, 53, 76, 88, 106, 121, 152, 176, 209, 212, 242, 304, 418, 424, 484, 583, 836, 848, 968, 1007, 1166, 1331, 1672, 1936, 2014, 2299, 2332, 2662, 3344, 4028, 4598, 4664, 5324, 6413, 8056, 9196, 9328, 10648, 11077, 12826, 16112, 18392, 21296, 22154, 25289, 25652, 36784, 44308, 50578, 51304, 70543, 88616, 101156, 102608, 121847, 141086, 177232, 202312, 243694, 282172, 404624, 487388, 564344, 974776, 1128688, 1340317, 1949552, 2680634, 5361268, 10722536, 21445072]

約数ペア:

[(1, 21445072), (2, 10722536), (4, 5361268), (8, 2680634), (11, 1949552), (16, 1340317), (19, 1128688), (22, 974776), (38, 564344), (44, 487388), (53, 404624), (76, 282172), (88, 243694), (106, 202312), (121, 177232), (152, 141086), (176, 121847), (209, 102608), (212, 101156), (242, 88616), (304, 70543), (418, 51304), (424, 50578), (484, 44308), (583, 36784), (836, 25652), (848, 25289), (968, 22154), (1007, 21296), (1166, 18392), (1331, 16112), (1672, 12826), (1936, 11077), (2014, 10648), (2299, 9328), (2332, 9196), (2662, 8056), (3344, 6413), (4028, 5324), (4598, 4664)]