20872672

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{397}}^1$

素因数の和:491

約数の個数: 48

約数和(自身を含む): 43327872

約数和(自身を除く): 22455200

約数列:

[1, 2, 4, 8, 16, 31, 32, 53, 62, 106, 124, 212, 248, 397, 424, 496, 794, 848, 992, 1588, 1643, 1696, 3176, 3286, 6352, 6572, 12307, 12704, 13144, 21041, 24614, 26288, 42082, 49228, 52576, 84164, 98456, 168328, 196912, 336656, 393824, 652271, 673312, 1304542, 2609084, 5218168, 10436336, 20872672]

約数ペア:

[(1, 20872672), (2, 10436336), (4, 5218168), (8, 2609084), (16, 1304542), (31, 673312), (32, 652271), (53, 393824), (62, 336656), (106, 196912), (124, 168328), (212, 98456), (248, 84164), (397, 52576), (424, 49228), (496, 42082), (794, 26288), (848, 24614), (992, 21041), (1588, 13144), (1643, 12704), (1696, 12307), (3176, 6572), (3286, 6352)]