21000611515

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1381}}^1\times {\mathrm{6323}}^1$

素因数の和:7759

約数の個数: 32

約数和(自身を含む): 27897339456

約数和(自身を除く): 6896727941

約数列:

[1, 5, 13, 37, 65, 185, 481, 1381, 2405, 6323, 6905, 17953, 31615, 51097, 82199, 89765, 233951, 255485, 410995, 664261, 1169755, 3041363, 3321305, 8732063, 15206815, 43660315, 113516819, 323086331, 567584095, 1615431655, 4200122303, 21000611515]

約数ペア:

[(1, 21000611515), (5, 4200122303), (13, 1615431655), (37, 567584095), (65, 323086331), (185, 113516819), (481, 43660315), (1381, 15206815), (2405, 8732063), (6323, 3321305), (6905, 3041363), (17953, 1169755), (31615, 664261), (51097, 410995), (82199, 255485), (89765, 233951)]