21515258

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{239}}^1$

素因数の和:386

約数の個数: 32

約数和(自身を含む): 35942400

約数和(自身を除く): 14427142

約数列:

[1, 2, 19, 23, 38, 46, 103, 206, 239, 437, 478, 874, 1957, 2369, 3914, 4541, 4738, 5497, 9082, 10994, 24617, 45011, 49234, 90022, 104443, 208886, 467723, 566191, 935446, 1132382, 10757629, 21515258]

約数ペア:

[(1, 21515258), (2, 10757629), (19, 1132382), (23, 935446), (38, 566191), (46, 467723), (103, 208886), (206, 104443), (239, 90022), (437, 49234), (478, 45011), (874, 24617), (1957, 10994), (2369, 9082), (3914, 5497), (4541, 4738)]