21208788

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{307}}^1$

素因数の和:437

約数の個数: 72

約数和(自身を含む): 57177120

約数和(自身を除く): 35968332

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 101, 114, 171, 202, 228, 303, 307, 342, 404, 606, 614, 684, 909, 921, 1212, 1228, 1818, 1842, 1919, 2763, 3636, 3684, 3838, 5526, 5757, 5833, 7676, 11052, 11514, 11666, 17271, 17499, 23028, 23332, 31007, 34542, 34998, 52497, 62014, 69084, 69996, 93021, 104994, 124028, 186042, 209988, 279063, 372084, 558126, 589133, 1116252, 1178266, 1767399, 2356532, 3534798, 5302197, 7069596, 10604394, 21208788]

約数ペア:

[(1, 21208788), (2, 10604394), (3, 7069596), (4, 5302197), (6, 3534798), (9, 2356532), (12, 1767399), (18, 1178266), (19, 1116252), (36, 589133), (38, 558126), (57, 372084), (76, 279063), (101, 209988), (114, 186042), (171, 124028), (202, 104994), (228, 93021), (303, 69996), (307, 69084), (342, 62014), (404, 52497), (606, 34998), (614, 34542), (684, 31007), (909, 23332), (921, 23028), (1212, 17499), (1228, 17271), (1818, 11666), (1842, 11514), (1919, 11052), (2763, 7676), (3636, 5833), (3684, 5757), (3838, 5526)]