20005928495

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{113}}^1\times {\mathrm{521}}^1$

素因数の和:745

約数の個数: 96

約数和(自身を含む): 30120569280

約数和(自身を除く): 10114640785

約数列:

[1, 5, 7, 19, 35, 49, 73, 95, 113, 133, 245, 365, 511, 521, 565, 665, 791, 931, 1387, 2147, 2555, 2605, 3577, 3647, 3955, 4655, 5537, 6935, 8249, 9709, 9899, 10735, 15029, 17885, 18235, 25529, 27685, 38033, 41245, 48545, 49495, 57743, 58873, 67963, 69293, 75145, 105203, 127645, 156731, 190165, 266231, 288715, 294365, 339815, 346465, 404201, 412111, 485051, 526015, 722627, 783655, 1097117, 1118587, 1331155, 1863617, 2021005, 2060555, 2425255, 2884777, 3613135, 4297729, 5058389, 5485585, 5592935, 7679819, 7830109, 9318085, 14423885, 21488645, 25291945, 30084103, 35408723, 38399095, 39150545, 54810763, 81656851, 150420515, 177043615, 210588721, 274053815, 408284255, 571597957, 1052943605, 2857989785, 4001185699, 20005928495]

約数ペア:

[(1, 20005928495), (5, 4001185699), (7, 2857989785), (19, 1052943605), (35, 571597957), (49, 408284255), (73, 274053815), (95, 210588721), (113, 177043615), (133, 150420515), (245, 81656851), (365, 54810763), (511, 39150545), (521, 38399095), (565, 35408723), (665, 30084103), (791, 25291945), (931, 21488645), (1387, 14423885), (2147, 9318085), (2555, 7830109), (2605, 7679819), (3577, 5592935), (3647, 5485585), (3955, 5058389), (4655, 4297729), (5537, 3613135), (6935, 2884777), (8249, 2425255), (9709, 2060555), (9899, 2021005), (10735, 1863617), (15029, 1331155), (17885, 1118587), (18235, 1097117), (25529, 783655), (27685, 722627), (38033, 526015), (41245, 485051), (48545, 412111), (49495, 404201), (57743, 346465), (58873, 339815), (67963, 294365), (69293, 288715), (75145, 266231), (105203, 190165), (127645, 156731)]