21458164

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{353}}^1$

素因数の和:544

約数の個数: 48

約数和(自身を含む): 46626048

約数和(自身を除く): 25167884

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 167, 182, 334, 353, 364, 668, 706, 1169, 1412, 2171, 2338, 2471, 4342, 4589, 4676, 4942, 8684, 9178, 9884, 15197, 18356, 30394, 32123, 58951, 60788, 64246, 117902, 128492, 235804, 412657, 766363, 825314, 1532726, 1650628, 3065452, 5364541, 10729082, 21458164]

約数ペア:

[(1, 21458164), (2, 10729082), (4, 5364541), (7, 3065452), (13, 1650628), (14, 1532726), (26, 825314), (28, 766363), (52, 412657), (91, 235804), (167, 128492), (182, 117902), (334, 64246), (353, 60788), (364, 58951), (668, 32123), (706, 30394), (1169, 18356), (1412, 15197), (2171, 9884), (2338, 9178), (2471, 8684), (4342, 4942), (4589, 4676)]