21519305

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1$

素因数の和:233

約数の個数: 32

約数和(自身を含む): 28771200

約数和(自身を除く): 7251895

約数列:

[1, 5, 19, 29, 73, 95, 107, 145, 365, 535, 551, 1387, 2033, 2117, 2755, 3103, 6935, 7811, 10165, 10585, 15515, 39055, 40223, 58957, 148409, 201115, 226519, 294785, 742045, 1132595, 4303861, 21519305]

約数ペア:

[(1, 21519305), (5, 4303861), (19, 1132595), (29, 742045), (73, 294785), (95, 226519), (107, 201115), (145, 148409), (365, 58957), (535, 40223), (551, 39055), (1387, 15515), (2033, 10585), (2117, 10165), (2755, 7811), (3103, 6935)]