89610520

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{227}}^1$

素因数の和:448

約数の個数: 64

約数和(自身を含む): 206841600

約数和(自身を除く): 117231080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 139, 142, 227, 278, 284, 355, 454, 556, 568, 695, 710, 908, 1112, 1135, 1390, 1420, 1816, 2270, 2780, 2840, 4540, 5560, 9080, 9869, 16117, 19738, 31553, 32234, 39476, 49345, 63106, 64468, 78952, 80585, 98690, 126212, 128936, 157765, 161170, 197380, 252424, 315530, 322340, 394760, 631060, 644680, 1262120, 2240263, 4480526, 8961052, 11201315, 17922104, 22402630, 44805260, 89610520]

約数ペア:

[(1, 89610520), (2, 44805260), (4, 22402630), (5, 17922104), (8, 11201315), (10, 8961052), (20, 4480526), (40, 2240263), (71, 1262120), (139, 644680), (142, 631060), (227, 394760), (278, 322340), (284, 315530), (355, 252424), (454, 197380), (556, 161170), (568, 157765), (695, 128936), (710, 126212), (908, 98690), (1112, 80585), (1135, 78952), (1390, 64468), (1420, 63106), (1816, 49345), (2270, 39476), (2780, 32234), (2840, 31553), (4540, 19738), (5560, 16117), (9080, 9869)]