221520761

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:222

約数の個数: 64

約数和(自身を含む): 310542336

約数和(自身を除く): 89021575

約数列:

[1, 7, 11, 17, 31, 53, 77, 103, 119, 187, 217, 341, 371, 527, 583, 721, 901, 1133, 1309, 1643, 1751, 2387, 3193, 3689, 4081, 5459, 5797, 6307, 7931, 9911, 11501, 12257, 18073, 19261, 22351, 27931, 35123, 38213, 40579, 54281, 60049, 69377, 92803, 126511, 134827, 169229, 195517, 245861, 307241, 379967, 420343, 597091, 649621, 1020833, 1184603, 1861519, 2150687, 2876893, 4179637, 7145831, 13030633, 20138251, 31645823, 221520761]

約数ペア:

[(1, 221520761), (7, 31645823), (11, 20138251), (17, 13030633), (31, 7145831), (53, 4179637), (77, 2876893), (103, 2150687), (119, 1861519), (187, 1184603), (217, 1020833), (341, 649621), (371, 597091), (527, 420343), (583, 379967), (721, 307241), (901, 245861), (1133, 195517), (1309, 169229), (1643, 134827), (1751, 126511), (2387, 92803), (3193, 69377), (3689, 60049), (4081, 54281), (5459, 40579), (5797, 38213), (6307, 35123), (7931, 27931), (9911, 22351), (11501, 19261), (12257, 18073)]