221570307

素因数分解:

$3^2\times 7^2\times {\mathrm{569}}^1\times {\mathrm{883}}^1$

素因数の和:1472

約数の個数: 36

約数和(自身を含む): 373375080

約数和(自身を除く): 151804773

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 569, 883, 1707, 2649, 3983, 5121, 6181, 7947, 11949, 18543, 27881, 35847, 43267, 55629, 83643, 129801, 250929, 389403, 502427, 1507281, 3516989, 4521843, 10550967, 24618923, 31652901, 73856769, 221570307]

約数ペア:

[(1, 221570307), (3, 73856769), (7, 31652901), (9, 24618923), (21, 10550967), (49, 4521843), (63, 3516989), (147, 1507281), (441, 502427), (569, 389403), (883, 250929), (1707, 129801), (2649, 83643), (3983, 55629), (5121, 43267), (6181, 35847), (7947, 27881), (11949, 18543)]