20616393

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:166

約数の個数: 48

約数和(自身を含む): 34580480

約数和(自身を除く): 13964087

約数列:

[1, 3, 7, 17, 21, 43, 51, 79, 119, 129, 237, 289, 301, 357, 553, 731, 867, 903, 1343, 1659, 2023, 2193, 3397, 4029, 5117, 6069, 9401, 10191, 12427, 15351, 22831, 23779, 28203, 37281, 57749, 68493, 71337, 86989, 159817, 173247, 260967, 404243, 479451, 981733, 1212729, 2945199, 6872131, 20616393]

約数ペア:

[(1, 20616393), (3, 6872131), (7, 2945199), (17, 1212729), (21, 981733), (43, 479451), (51, 404243), (79, 260967), (119, 173247), (129, 159817), (237, 86989), (289, 71337), (301, 68493), (357, 57749), (553, 37281), (731, 28203), (867, 23779), (903, 22831), (1343, 15351), (1659, 12427), (2023, 10191), (2193, 9401), (3397, 6069), (4029, 5117)]