164906920

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{193}}^1\times {\mathrm{521}}^1$

素因数の和:766

約数の個数: 64

約数和(自身を含む): 382793040

約数和(自身を除く): 217886120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 193, 205, 328, 386, 410, 521, 772, 820, 965, 1042, 1544, 1640, 1930, 2084, 2605, 3860, 4168, 5210, 7720, 7913, 10420, 15826, 20840, 21361, 31652, 39565, 42722, 63304, 79130, 85444, 100553, 106805, 158260, 170888, 201106, 213610, 316520, 402212, 427220, 502765, 804424, 854440, 1005530, 2011060, 4022120, 4122673, 8245346, 16490692, 20613365, 32981384, 41226730, 82453460, 164906920]

約数ペア:

[(1, 164906920), (2, 82453460), (4, 41226730), (5, 32981384), (8, 20613365), (10, 16490692), (20, 8245346), (40, 4122673), (41, 4022120), (82, 2011060), (164, 1005530), (193, 854440), (205, 804424), (328, 502765), (386, 427220), (410, 402212), (521, 316520), (772, 213610), (820, 201106), (965, 170888), (1042, 158260), (1544, 106805), (1640, 100553), (1930, 85444), (2084, 79130), (2605, 63304), (3860, 42722), (4168, 39565), (5210, 31652), (7720, 21361), (7913, 20840), (10420, 15826)]