21365552

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{1741}}^1$

素因数の和:1821

約数の個数: 40

約数和(自身を含む): 45361680

約数和(自身を除く): 23996128

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 59, 104, 118, 208, 236, 472, 767, 944, 1534, 1741, 3068, 3482, 6136, 6964, 12272, 13928, 22633, 27856, 45266, 90532, 102719, 181064, 205438, 362128, 410876, 821752, 1335347, 1643504, 2670694, 5341388, 10682776, 21365552]

約数ペア:

[(1, 21365552), (2, 10682776), (4, 5341388), (8, 2670694), (13, 1643504), (16, 1335347), (26, 821752), (52, 410876), (59, 362128), (104, 205438), (118, 181064), (208, 102719), (236, 90532), (472, 45266), (767, 27856), (944, 22633), (1534, 13928), (1741, 12272), (3068, 6964), (3482, 6136)]