21000984025

素因数分解:

$5^2\times 7^1\times {\mathrm{983}}^1\times {\mathrm{122081}}^1$

素因数の和:123081

約数の個数: 24

約数和(自身を含む): 29791914624

約数和(自身を除く): 8790930599

約数列:

[1, 5, 7, 25, 35, 175, 983, 4915, 6881, 24575, 34405, 122081, 172025, 610405, 854567, 3052025, 4272835, 21364175, 120005623, 600028115, 840039361, 3000140575, 4200196805, 21000984025]

約数ペア:

[(1, 21000984025), (5, 4200196805), (7, 3000140575), (25, 840039361), (35, 600028115), (175, 120005623), (983, 21364175), (4915, 4272835), (6881, 3052025), (24575, 854567), (34405, 610405), (122081, 172025)]