21111558

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{8731}}^1$

素因数の和:8780

約数の個数: 32

約数和(自身を含む): 46943232

約数和(自身を除く): 25831674

約数列:

[1, 2, 3, 6, 13, 26, 31, 39, 62, 78, 93, 186, 403, 806, 1209, 2418, 8731, 17462, 26193, 52386, 113503, 227006, 270661, 340509, 541322, 681018, 811983, 1623966, 3518593, 7037186, 10555779, 21111558]

約数ペア:

[(1, 21111558), (2, 10555779), (3, 7037186), (6, 3518593), (13, 1623966), (26, 811983), (31, 681018), (39, 541322), (62, 340509), (78, 270661), (93, 227006), (186, 113503), (403, 52386), (806, 26193), (1209, 17462), (2418, 8731)]