20404448

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{307}}^1$

素因数の和:415

約数の個数: 48

約数和(自身を含む): 42223104

約数和(自身を除く): 21818656

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 67, 124, 134, 248, 268, 307, 496, 536, 614, 992, 1072, 1228, 2077, 2144, 2456, 4154, 4912, 8308, 9517, 9824, 16616, 19034, 20569, 33232, 38068, 41138, 66464, 76136, 82276, 152272, 164552, 304544, 329104, 637639, 658208, 1275278, 2550556, 5101112, 10202224, 20404448]

約数ペア:

[(1, 20404448), (2, 10202224), (4, 5101112), (8, 2550556), (16, 1275278), (31, 658208), (32, 637639), (62, 329104), (67, 304544), (124, 164552), (134, 152272), (248, 82276), (268, 76136), (307, 66464), (496, 41138), (536, 38068), (614, 33232), (992, 20569), (1072, 19034), (1228, 16616), (2077, 9824), (2144, 9517), (2456, 8308), (4154, 4912)]