21125601

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{373}}^1$

素因数の和:446

約数の個数: 48

約数和(自身を含む): 37340160

約数和(自身を除く): 16214559

約数列:

[1, 3, 7, 9, 21, 29, 31, 63, 87, 93, 203, 217, 261, 279, 373, 609, 651, 899, 1119, 1827, 1953, 2611, 2697, 3357, 6293, 7833, 8091, 10817, 11563, 18879, 23499, 32451, 34689, 56637, 75719, 80941, 97353, 104067, 227157, 242823, 335327, 681471, 728469, 1005981, 2347289, 3017943, 7041867, 21125601]

約数ペア:

[(1, 21125601), (3, 7041867), (7, 3017943), (9, 2347289), (21, 1005981), (29, 728469), (31, 681471), (63, 335327), (87, 242823), (93, 227157), (203, 104067), (217, 97353), (261, 80941), (279, 75719), (373, 56637), (609, 34689), (651, 32451), (899, 23499), (1119, 18879), (1827, 11563), (1953, 10817), (2611, 8091), (2697, 7833), (3357, 6293)]