20912316

素因数分解:

$2^2\times 3^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1\times {\mathrm{251}}^1$

素因数の和:442

約数の個数: 48

約数和(自身を含む): 50295168

約数和(自身を除く): 29382852

約数列:

[1, 2, 3, 4, 6, 12, 53, 106, 131, 159, 212, 251, 262, 318, 393, 502, 524, 636, 753, 786, 1004, 1506, 1572, 3012, 6943, 13303, 13886, 20829, 26606, 27772, 32881, 39909, 41658, 53212, 65762, 79818, 83316, 98643, 131524, 159636, 197286, 394572, 1742693, 3485386, 5228079, 6970772, 10456158, 20912316]

約数ペア:

[(1, 20912316), (2, 10456158), (3, 6970772), (4, 5228079), (6, 3485386), (12, 1742693), (53, 394572), (106, 197286), (131, 159636), (159, 131524), (212, 98643), (251, 83316), (262, 79818), (318, 65762), (393, 53212), (502, 41658), (524, 39909), (636, 32881), (753, 27772), (786, 26606), (1004, 20829), (1506, 13886), (1572, 13303), (3012, 6943)]