31217823

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{811}}^1$

素因数の和:884

約数の個数: 48

約数和(自身を含む): 56749056

約数和(自身を除く): 25531233

約数列:

[1, 3, 7, 9, 13, 21, 39, 47, 63, 91, 117, 141, 273, 329, 423, 611, 811, 819, 987, 1833, 2433, 2961, 4277, 5499, 5677, 7299, 10543, 12831, 17031, 31629, 38117, 38493, 51093, 73801, 94887, 114351, 221403, 266819, 343053, 495521, 664209, 800457, 1486563, 2401371, 3468647, 4459689, 10405941, 31217823]

約数ペア:

[(1, 31217823), (3, 10405941), (7, 4459689), (9, 3468647), (13, 2401371), (21, 1486563), (39, 800457), (47, 664209), (63, 495521), (91, 343053), (117, 266819), (141, 221403), (273, 114351), (329, 94887), (423, 73801), (611, 51093), (811, 38493), (819, 38117), (987, 31629), (1833, 17031), (2433, 12831), (2961, 10543), (4277, 7299), (5499, 5677)]