20996672

素因数分解:

$2^6\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{557}}^1$

素因数の和:619

約数の個数: 56

約数和(自身を含む): 45354240

約数和(自身を除く): 24357568

約数列:

[1, 2, 4, 8, 16, 19, 31, 32, 38, 62, 64, 76, 124, 152, 248, 304, 496, 557, 589, 608, 992, 1114, 1178, 1216, 1984, 2228, 2356, 4456, 4712, 8912, 9424, 10583, 17267, 17824, 18848, 21166, 34534, 35648, 37696, 42332, 69068, 84664, 138136, 169328, 276272, 328073, 338656, 552544, 656146, 677312, 1105088, 1312292, 2624584, 5249168, 10498336, 20996672]

約数ペア:

[(1, 20996672), (2, 10498336), (4, 5249168), (8, 2624584), (16, 1312292), (19, 1105088), (31, 677312), (32, 656146), (38, 552544), (62, 338656), (64, 328073), (76, 276272), (124, 169328), (152, 138136), (248, 84664), (304, 69068), (496, 42332), (557, 37696), (589, 35648), (608, 34534), (992, 21166), (1114, 18848), (1178, 17824), (1216, 17267), (1984, 10583), (2228, 9424), (2356, 8912), (4456, 4712)]