20172978

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{6961}}^1$

素因数の和:6999

約数の個数: 48

約数和(自身を含む): 52131456

約数和(自身を除く): 31958478

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 23, 42, 46, 63, 69, 126, 138, 161, 207, 322, 414, 483, 966, 1449, 2898, 6961, 13922, 20883, 41766, 48727, 62649, 97454, 125298, 146181, 160103, 292362, 320206, 438543, 480309, 877086, 960618, 1120721, 1440927, 2241442, 2881854, 3362163, 6724326, 10086489, 20172978]

約数ペア:

[(1, 20172978), (2, 10086489), (3, 6724326), (6, 3362163), (7, 2881854), (9, 2241442), (14, 1440927), (18, 1120721), (21, 960618), (23, 877086), (42, 480309), (46, 438543), (63, 320206), (69, 292362), (126, 160103), (138, 146181), (161, 125298), (207, 97454), (322, 62649), (414, 48727), (483, 41766), (966, 20883), (1449, 13922), (2898, 6961)]