19912323280

素因数分解:

$2^4\times 5^1\times {\mathrm{421}}^1\times {\mathrm{593}}^1\times {\mathrm{997}}^1$

素因数の和:2024

約数の個数: 80

約数和(自身を含む): 46530999504

約数和(自身を除く): 26618676224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 421, 593, 842, 997, 1186, 1684, 1994, 2105, 2372, 2965, 3368, 3988, 4210, 4744, 4985, 5930, 6736, 7976, 8420, 9488, 9970, 11860, 15952, 16840, 19940, 23720, 33680, 39880, 47440, 79760, 249653, 419737, 499306, 591221, 839474, 998612, 1182442, 1248265, 1678948, 1997224, 2098685, 2364884, 2496530, 2956105, 3357896, 3994448, 4197370, 4729768, 4993060, 5912210, 6715792, 8394740, 9459536, 9986120, 11824420, 16789480, 19972240, 23648840, 33578960, 47297680, 248904041, 497808082, 995616164, 1244520205, 1991232328, 2489040410, 3982464656, 4978080820, 9956161640, 19912323280]

約数ペア:

[(1, 19912323280), (2, 9956161640), (4, 4978080820), (5, 3982464656), (8, 2489040410), (10, 1991232328), (16, 1244520205), (20, 995616164), (40, 497808082), (80, 248904041), (421, 47297680), (593, 33578960), (842, 23648840), (997, 19972240), (1186, 16789480), (1684, 11824420), (1994, 9986120), (2105, 9459536), (2372, 8394740), (2965, 6715792), (3368, 5912210), (3988, 4993060), (4210, 4729768), (4744, 4197370), (4985, 3994448), (5930, 3357896), (6736, 2956105), (7976, 2496530), (8420, 2364884), (9488, 2098685), (9970, 1997224), (11860, 1678948), (15952, 1248265), (16840, 1182442), (19940, 998612), (23720, 839474), (33680, 591221), (39880, 499306), (47440, 419737), (79760, 249653)]