641661808

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{227}}^1$

素因数の和:446

約数の個数: 80

約数和(自身を含む): 1329914880

約数和(自身を除く): 688253072

約数列:

[1, 2, 4, 8, 16, 31, 41, 62, 82, 124, 139, 164, 227, 248, 278, 328, 454, 496, 556, 656, 908, 1112, 1271, 1816, 2224, 2542, 3632, 4309, 5084, 5699, 7037, 8618, 9307, 10168, 11398, 14074, 17236, 18614, 20336, 22796, 28148, 31553, 34472, 37228, 45592, 56296, 63106, 68944, 74456, 91184, 112592, 126212, 148912, 176669, 252424, 288517, 353338, 504848, 577034, 706676, 978143, 1154068, 1293673, 1413352, 1956286, 2308136, 2587346, 2826704, 3912572, 4616272, 5174692, 7825144, 10349384, 15650288, 20698768, 40103863, 80207726, 160415452, 320830904, 641661808]

約数ペア:

[(1, 641661808), (2, 320830904), (4, 160415452), (8, 80207726), (16, 40103863), (31, 20698768), (41, 15650288), (62, 10349384), (82, 7825144), (124, 5174692), (139, 4616272), (164, 3912572), (227, 2826704), (248, 2587346), (278, 2308136), (328, 1956286), (454, 1413352), (496, 1293673), (556, 1154068), (656, 978143), (908, 706676), (1112, 577034), (1271, 504848), (1816, 353338), (2224, 288517), (2542, 252424), (3632, 176669), (4309, 148912), (5084, 126212), (5699, 112592), (7037, 91184), (8618, 74456), (9307, 68944), (10168, 63106), (11398, 56296), (14074, 45592), (17236, 37228), (18614, 34472), (20336, 31553), (22796, 28148)]