31257219

素因数分解:

$3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{227}}^1$

素因数の和:399

約数の個数: 32

約数和(自身を含む): 49029120

約数和(自身を除く): 17771901

約数列:

[1, 3, 7, 21, 79, 83, 227, 237, 249, 553, 581, 681, 1589, 1659, 1743, 4767, 6557, 17933, 18841, 19671, 45899, 53799, 56523, 125531, 131887, 137697, 376593, 395661, 1488439, 4465317, 10419073, 31257219]

約数ペア:

[(1, 31257219), (3, 10419073), (7, 4465317), (21, 1488439), (79, 395661), (83, 376593), (227, 137697), (237, 131887), (249, 125531), (553, 56523), (581, 53799), (681, 45899), (1589, 19671), (1659, 18841), (1743, 17933), (4767, 6557)]