21687614

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{353}}^1$

素因数の和:524

約数の個数: 32

約数和(自身を含む): 37467360

約数和(自身を除く): 15779746

約数列:

[1, 2, 13, 17, 26, 34, 139, 221, 278, 353, 442, 706, 1807, 2363, 3614, 4589, 4726, 6001, 9178, 12002, 30719, 49067, 61438, 78013, 98134, 156026, 637871, 834139, 1275742, 1668278, 10843807, 21687614]

約数ペア:

[(1, 21687614), (2, 10843807), (13, 1668278), (17, 1275742), (26, 834139), (34, 637871), (139, 156026), (221, 98134), (278, 78013), (353, 61438), (442, 49067), (706, 30719), (1807, 12002), (2363, 9178), (3614, 6001), (4589, 4726)]