21996472

素因数分解:

$2^3\times {\mathrm{131}}^1\times {\mathrm{139}}^1\times {\mathrm{151}}^1$

素因数の和:427

約数の個数: 32

約数和(自身を含む): 42134400

約数和(自身を除く): 20137928

約数列:

[1, 2, 4, 8, 131, 139, 151, 262, 278, 302, 524, 556, 604, 1048, 1112, 1208, 18209, 19781, 20989, 36418, 39562, 41978, 72836, 79124, 83956, 145672, 158248, 167912, 2749559, 5499118, 10998236, 21996472]

約数ペア:

[(1, 21996472), (2, 10998236), (4, 5499118), (8, 2749559), (131, 167912), (139, 158248), (151, 145672), (262, 83956), (278, 79124), (302, 72836), (524, 41978), (556, 39562), (604, 36418), (1048, 20989), (1112, 19781), (1208, 18209)]