21568953

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{331}}^1$

素因数の和:477

約数の個数: 32

約数和(自身を含む): 34421760

約数和(自身を除く): 12852807

約数列:

[1, 3, 7, 21, 29, 87, 107, 203, 321, 331, 609, 749, 993, 2247, 2317, 3103, 6951, 9309, 9599, 21721, 28797, 35417, 65163, 67193, 106251, 201579, 247919, 743757, 1027093, 3081279, 7189651, 21568953]

約数ペア:

[(1, 21568953), (3, 7189651), (7, 3081279), (21, 1027093), (29, 743757), (87, 247919), (107, 201579), (203, 106251), (321, 67193), (331, 65163), (609, 35417), (749, 28797), (993, 21721), (2247, 9599), (2317, 9309), (3103, 6951)]