20797596

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^2\times {\mathrm{1999}}^1$

素因数の和:2043

約数の個数: 54

約数和(自身を含む): 55874000

約数和(自身を除く): 35076404

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 68, 102, 153, 204, 289, 306, 578, 612, 867, 1156, 1734, 1999, 2601, 3468, 3998, 5202, 5997, 7996, 10404, 11994, 17991, 23988, 33983, 35982, 67966, 71964, 101949, 135932, 203898, 305847, 407796, 577711, 611694, 1155422, 1223388, 1733133, 2310844, 3466266, 5199399, 6932532, 10398798, 20797596]

約数ペア:

[(1, 20797596), (2, 10398798), (3, 6932532), (4, 5199399), (6, 3466266), (9, 2310844), (12, 1733133), (17, 1223388), (18, 1155422), (34, 611694), (36, 577711), (51, 407796), (68, 305847), (102, 203898), (153, 135932), (204, 101949), (289, 71964), (306, 67966), (578, 35982), (612, 33983), (867, 23988), (1156, 17991), (1734, 11994), (1999, 10404), (2601, 7996), (3468, 5997), (3998, 5202)]