21485156

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{883}}^1$

素因数の和:984

約数の個数: 48

約数和(自身を含む): 47523840

約数和(自身を除く): 26038684

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 79, 154, 158, 308, 316, 553, 869, 883, 1106, 1738, 1766, 2212, 3476, 3532, 6083, 6181, 9713, 12166, 12362, 19426, 24332, 24724, 38852, 67991, 69757, 135982, 139514, 271964, 279028, 488299, 767327, 976598, 1534654, 1953196, 3069308, 5371289, 10742578, 21485156]

約数ペア:

[(1, 21485156), (2, 10742578), (4, 5371289), (7, 3069308), (11, 1953196), (14, 1534654), (22, 976598), (28, 767327), (44, 488299), (77, 279028), (79, 271964), (154, 139514), (158, 135982), (308, 69757), (316, 67991), (553, 38852), (869, 24724), (883, 24332), (1106, 19426), (1738, 12362), (1766, 12166), (2212, 9713), (3476, 6181), (3532, 6083)]