21000485056

素因数分解:

$2^6\times {\mathrm{2551}}^1\times {\mathrm{128629}}^1$

素因数の和:131192

約数の個数: 28

約数和(自身を含む): 41689497520

約数和(自身を除く): 20689012464

約数列:

[1, 2, 4, 8, 16, 32, 64, 2551, 5102, 10204, 20408, 40816, 81632, 128629, 163264, 257258, 514516, 1029032, 2058064, 4116128, 8232256, 328132579, 656265158, 1312530316, 2625060632, 5250121264, 10500242528, 21000485056]

約数ペア:

[(1, 21000485056), (2, 10500242528), (4, 5250121264), (8, 2625060632), (16, 1312530316), (32, 656265158), (64, 328132579), (2551, 8232256), (5102, 4116128), (10204, 2058064), (20408, 1029032), (40816, 514516), (81632, 257258), (128629, 163264)]