68460280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1759}}^1$

素因数の和:1916

約数の個数: 64

約数和(自身を含む): 177408000

約数和(自身を除く): 108947720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 139, 140, 278, 280, 556, 695, 973, 1112, 1390, 1759, 1946, 2780, 3518, 3892, 4865, 5560, 7036, 7784, 8795, 9730, 12313, 14072, 17590, 19460, 24626, 35180, 38920, 49252, 61565, 70360, 98504, 123130, 244501, 246260, 489002, 492520, 978004, 1222505, 1711507, 1956008, 2445010, 3423014, 4890020, 6846028, 8557535, 9780040, 13692056, 17115070, 34230140, 68460280]

約数ペア:

[(1, 68460280), (2, 34230140), (4, 17115070), (5, 13692056), (7, 9780040), (8, 8557535), (10, 6846028), (14, 4890020), (20, 3423014), (28, 2445010), (35, 1956008), (40, 1711507), (56, 1222505), (70, 978004), (139, 492520), (140, 489002), (278, 246260), (280, 244501), (556, 123130), (695, 98504), (973, 70360), (1112, 61565), (1390, 49252), (1759, 38920), (1946, 35180), (2780, 24626), (3518, 19460), (3892, 17590), (4865, 14072), (5560, 12313), (7036, 9730), (7784, 8795)]