80660120

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{359}}^1$

素因数の和:548

約数の個数: 64

約数和(自身を含む): 187790400

約数和(自身を除く): 107130280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 137, 164, 205, 274, 328, 359, 410, 548, 685, 718, 820, 1096, 1370, 1436, 1640, 1795, 2740, 2872, 3590, 5480, 5617, 7180, 11234, 14360, 14719, 22468, 28085, 29438, 44936, 49183, 56170, 58876, 73595, 98366, 112340, 117752, 147190, 196732, 224680, 245915, 294380, 393464, 491830, 588760, 983660, 1967320, 2016503, 4033006, 8066012, 10082515, 16132024, 20165030, 40330060, 80660120]

約数ペア:

[(1, 80660120), (2, 40330060), (4, 20165030), (5, 16132024), (8, 10082515), (10, 8066012), (20, 4033006), (40, 2016503), (41, 1967320), (82, 983660), (137, 588760), (164, 491830), (205, 393464), (274, 294380), (328, 245915), (359, 224680), (410, 196732), (548, 147190), (685, 117752), (718, 112340), (820, 98366), (1096, 73595), (1370, 58876), (1436, 56170), (1640, 49183), (1795, 44936), (2740, 29438), (2872, 28085), (3590, 22468), (5480, 14719), (5617, 14360), (7180, 11234)]