21767545

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1$

素因数の和:225

約数の個数: 32

約数和(自身を含む): 28926720

約数和(自身を除く): 7159175

約数列:

[1, 5, 23, 29, 61, 107, 115, 145, 305, 535, 667, 1403, 1769, 2461, 3103, 3335, 6527, 7015, 8845, 12305, 15515, 32635, 40687, 71369, 150121, 189283, 203435, 356845, 750605, 946415, 4353509, 21767545]

約数ペア:

[(1, 21767545), (5, 4353509), (23, 946415), (29, 750605), (61, 356845), (107, 203435), (115, 189283), (145, 150121), (305, 71369), (535, 40687), (667, 32635), (1403, 15515), (1769, 12305), (2461, 8845), (3103, 7015), (3335, 6527)]