20148884

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{167}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 42147840

約数和(自身を除く): 21998956

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 139, 167, 217, 278, 334, 434, 556, 668, 868, 973, 1169, 1946, 2338, 3892, 4309, 4676, 5177, 8618, 10354, 17236, 20708, 23213, 30163, 36239, 46426, 60326, 72478, 92852, 120652, 144956, 162491, 324982, 649964, 719603, 1439206, 2878412, 5037221, 10074442, 20148884]

約数ペア:

[(1, 20148884), (2, 10074442), (4, 5037221), (7, 2878412), (14, 1439206), (28, 719603), (31, 649964), (62, 324982), (124, 162491), (139, 144956), (167, 120652), (217, 92852), (278, 72478), (334, 60326), (434, 46426), (556, 36239), (668, 30163), (868, 23213), (973, 20708), (1169, 17236), (1946, 10354), (2338, 8618), (3892, 5177), (4309, 4676)]