20421884

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1669}}^1$

素因数の和:1722

約数の個数: 48

約数和(自身を含む): 44889600

約数和(自身を除く): 24467716

約数列:

[1, 2, 4, 7, 14, 19, 23, 28, 38, 46, 76, 92, 133, 161, 266, 322, 437, 532, 644, 874, 1669, 1748, 3059, 3338, 6118, 6676, 11683, 12236, 23366, 31711, 38387, 46732, 63422, 76774, 126844, 153548, 221977, 268709, 443954, 537418, 729353, 887908, 1074836, 1458706, 2917412, 5105471, 10210942, 20421884]

約数ペア:

[(1, 20421884), (2, 10210942), (4, 5105471), (7, 2917412), (14, 1458706), (19, 1074836), (23, 887908), (28, 729353), (38, 537418), (46, 443954), (76, 268709), (92, 221977), (133, 153548), (161, 126844), (266, 76774), (322, 63422), (437, 46732), (532, 38387), (644, 31711), (874, 23366), (1669, 12236), (1748, 11683), (3059, 6676), (3338, 6118)]