21281722

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{739}}^1$

素因数の和:787

約数の個数: 48

約数和(自身を含む): 42517440

約数和(自身を除く): 21235718

約数列:

[1, 2, 7, 11, 14, 17, 22, 34, 77, 119, 121, 154, 187, 238, 242, 374, 739, 847, 1309, 1478, 1694, 2057, 2618, 4114, 5173, 8129, 10346, 12563, 14399, 16258, 25126, 28798, 56903, 87941, 89419, 113806, 138193, 175882, 178838, 276386, 625933, 967351, 1251866, 1520123, 1934702, 3040246, 10640861, 21281722]

約数ペア:

[(1, 21281722), (2, 10640861), (7, 3040246), (11, 1934702), (14, 1520123), (17, 1251866), (22, 967351), (34, 625933), (77, 276386), (119, 178838), (121, 175882), (154, 138193), (187, 113806), (238, 89419), (242, 87941), (374, 56903), (739, 28798), (847, 25126), (1309, 16258), (1478, 14399), (1694, 12563), (2057, 10346), (2618, 8129), (4114, 5173)]