218908459

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{139}}^1\times {\mathrm{181}}^1$

素因数の和:451

約数の個数: 32

約数和(自身を含む): 278853120

約数和(自身を除く): 59944661

約数列:

[1, 7, 11, 77, 113, 139, 181, 791, 973, 1243, 1267, 1529, 1991, 8701, 10703, 13937, 15707, 20453, 25159, 109949, 143171, 172777, 176113, 224983, 276749, 1209439, 1574881, 1937243, 2842967, 19900769, 31272637, 218908459]

約数ペア:

[(1, 218908459), (7, 31272637), (11, 19900769), (77, 2842967), (113, 1937243), (139, 1574881), (181, 1209439), (791, 276749), (973, 224983), (1243, 176113), (1267, 172777), (1529, 143171), (1991, 109949), (8701, 25159), (10703, 20453), (13937, 15707)]