21797320

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{1741}}^1$

素因数の和:2065

約数の個数: 32

約数和(自身を含む): 49228920

約数和(自身を除く): 27431600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1252, 1565, 1741, 2504, 3130, 3482, 6260, 6964, 8705, 12520, 13928, 17410, 34820, 69640, 544933, 1089866, 2179732, 2724665, 4359464, 5449330, 10898660, 21797320]

約数ペア:

[(1, 21797320), (2, 10898660), (4, 5449330), (5, 4359464), (8, 2724665), (10, 2179732), (20, 1089866), (40, 544933), (313, 69640), (626, 34820), (1252, 17410), (1565, 13928), (1741, 12520), (2504, 8705), (3130, 6964), (3482, 6260)]