21007504

素因数分解:

$2^4\times 7^1\times {\mathrm{53}}^1\times {\mathrm{3539}}^1$

素因数の和:3607

約数の個数: 40

約数和(自身を含む): 47407680

約数和(自身を除く): 26400176

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 53, 56, 106, 112, 212, 371, 424, 742, 848, 1484, 2968, 3539, 5936, 7078, 14156, 24773, 28312, 49546, 56624, 99092, 187567, 198184, 375134, 396368, 750268, 1312969, 1500536, 2625938, 3001072, 5251876, 10503752, 21007504]

約数ペア:

[(1, 21007504), (2, 10503752), (4, 5251876), (7, 3001072), (8, 2625938), (14, 1500536), (16, 1312969), (28, 750268), (53, 396368), (56, 375134), (106, 198184), (112, 187567), (212, 99092), (371, 56624), (424, 49546), (742, 28312), (848, 24773), (1484, 14156), (2968, 7078), (3539, 5936)]