21207494

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{191}}^1$

素因数の和:321

約数の個数: 48

約数和(自身を含む): 40974336

約数和(自身を除く): 19766842

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 103, 154, 191, 206, 382, 539, 721, 1078, 1133, 1337, 1442, 2101, 2266, 2674, 4202, 5047, 7931, 9359, 10094, 14707, 15862, 18718, 19673, 29414, 39346, 55517, 102949, 111034, 137711, 205898, 216403, 275422, 432806, 963977, 1514821, 1927954, 3029642, 10603747, 21207494]

約数ペア:

[(1, 21207494), (2, 10603747), (7, 3029642), (11, 1927954), (14, 1514821), (22, 963977), (49, 432806), (77, 275422), (98, 216403), (103, 205898), (154, 137711), (191, 111034), (206, 102949), (382, 55517), (539, 39346), (721, 29414), (1078, 19673), (1133, 18718), (1337, 15862), (1442, 14707), (2101, 10094), (2266, 9359), (2674, 7931), (4202, 5047)]