66888880

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{359}}^1$

素因数の和:526

約数の個数: 80

約数和(自身を含む): 166328640

約数和(自身を除く): 99439760

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 137, 170, 272, 274, 340, 359, 548, 680, 685, 718, 1096, 1360, 1370, 1436, 1795, 2192, 2329, 2740, 2872, 3590, 4658, 5480, 5744, 6103, 7180, 9316, 10960, 11645, 12206, 14360, 18632, 23290, 24412, 28720, 30515, 37264, 46580, 48824, 49183, 61030, 93160, 97648, 98366, 122060, 186320, 196732, 244120, 245915, 393464, 488240, 491830, 786928, 836111, 983660, 1672222, 1967320, 3344444, 3934640, 4180555, 6688888, 8361110, 13377776, 16722220, 33444440, 66888880]

約数ペア:

[(1, 66888880), (2, 33444440), (4, 16722220), (5, 13377776), (8, 8361110), (10, 6688888), (16, 4180555), (17, 3934640), (20, 3344444), (34, 1967320), (40, 1672222), (68, 983660), (80, 836111), (85, 786928), (136, 491830), (137, 488240), (170, 393464), (272, 245915), (274, 244120), (340, 196732), (359, 186320), (548, 122060), (680, 98366), (685, 97648), (718, 93160), (1096, 61030), (1360, 49183), (1370, 48824), (1436, 46580), (1795, 37264), (2192, 30515), (2329, 28720), (2740, 24412), (2872, 23290), (3590, 18632), (4658, 14360), (5480, 12206), (5744, 11645), (6103, 10960), (7180, 9316)]