20764112

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{167}}^1\times {\mathrm{409}}^1$

素因数の和:603

約数の個数: 40

約数和(自身を含む): 42705600

約数和(自身を除く): 21941488

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 167, 304, 334, 409, 668, 818, 1336, 1636, 2672, 3173, 3272, 6346, 6544, 7771, 12692, 15542, 25384, 31084, 50768, 62168, 68303, 124336, 136606, 273212, 546424, 1092848, 1297757, 2595514, 5191028, 10382056, 20764112]

約数ペア:

[(1, 20764112), (2, 10382056), (4, 5191028), (8, 2595514), (16, 1297757), (19, 1092848), (38, 546424), (76, 273212), (152, 136606), (167, 124336), (304, 68303), (334, 62168), (409, 50768), (668, 31084), (818, 25384), (1336, 15542), (1636, 12692), (2672, 7771), (3173, 6544), (3272, 6346)]