31091487

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:200

約数の個数: 48

約数和(自身を含む): 51870720

約数和(自身を除く): 20779233

約数列:

[1, 3, 7, 17, 21, 47, 51, 109, 119, 141, 289, 327, 329, 357, 763, 799, 867, 987, 1853, 2023, 2289, 2397, 5123, 5559, 5593, 6069, 12971, 13583, 15369, 16779, 31501, 35861, 38913, 40749, 87091, 94503, 95081, 107583, 220507, 261273, 285243, 609637, 661521, 1480547, 1828911, 4441641, 10363829, 31091487]

約数ペア:

[(1, 31091487), (3, 10363829), (7, 4441641), (17, 1828911), (21, 1480547), (47, 661521), (51, 609637), (109, 285243), (119, 261273), (141, 220507), (289, 107583), (327, 95081), (329, 94503), (357, 87091), (763, 40749), (799, 38913), (867, 35861), (987, 31501), (1853, 16779), (2023, 15369), (2289, 13583), (2397, 12971), (5123, 6069), (5559, 5593)]