21007798

素因数分解:

$2^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{101}}^1\times {\mathrm{179}}^1$

素因数の和:372

約数の個数: 32

約数和(自身を含む): 37013760

約数和(自身を除く): 16005962

約数列:

[1, 2, 7, 14, 83, 101, 166, 179, 202, 358, 581, 707, 1162, 1253, 1414, 2506, 8383, 14857, 16766, 18079, 29714, 36158, 58681, 103999, 117362, 126553, 207998, 253106, 1500557, 3001114, 10503899, 21007798]

約数ペア:

[(1, 21007798), (2, 10503899), (7, 3001114), (14, 1500557), (83, 253106), (101, 207998), (166, 126553), (179, 117362), (202, 103999), (358, 58681), (581, 36158), (707, 29714), (1162, 18079), (1253, 16766), (1414, 14857), (2506, 8383)]