78251440

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{227}}^1$

素因数の和:410

約数の個数: 80

約数和(自身を含む): 189987840

約数和(自身を除く): 111736400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 139, 155, 227, 248, 278, 310, 454, 496, 556, 620, 695, 908, 1112, 1135, 1240, 1390, 1816, 2224, 2270, 2480, 2780, 3632, 4309, 4540, 5560, 7037, 8618, 9080, 11120, 14074, 17236, 18160, 21545, 28148, 31553, 34472, 35185, 43090, 56296, 63106, 68944, 70370, 86180, 112592, 126212, 140740, 157765, 172360, 252424, 281480, 315530, 344720, 504848, 562960, 631060, 978143, 1262120, 1956286, 2524240, 3912572, 4890715, 7825144, 9781430, 15650288, 19562860, 39125720, 78251440]

約数ペア:

[(1, 78251440), (2, 39125720), (4, 19562860), (5, 15650288), (8, 9781430), (10, 7825144), (16, 4890715), (20, 3912572), (31, 2524240), (40, 1956286), (62, 1262120), (80, 978143), (124, 631060), (139, 562960), (155, 504848), (227, 344720), (248, 315530), (278, 281480), (310, 252424), (454, 172360), (496, 157765), (556, 140740), (620, 126212), (695, 112592), (908, 86180), (1112, 70370), (1135, 68944), (1240, 63106), (1390, 56296), (1816, 43090), (2224, 35185), (2270, 34472), (2480, 31553), (2780, 28148), (3632, 21545), (4309, 18160), (4540, 17236), (5560, 14074), (7037, 11120), (8618, 9080)]