21249305

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{569}}^1$

素因数の和:689

約数の個数: 32

約数和(自身を含む): 32175360

約数和(自身を除く): 10926055

約数列:

[1, 5, 7, 11, 35, 55, 77, 97, 385, 485, 569, 679, 1067, 2845, 3395, 3983, 5335, 6259, 7469, 19915, 31295, 37345, 43813, 55193, 219065, 275965, 386351, 607123, 1931755, 3035615, 4249861, 21249305]

約数ペア:

[(1, 21249305), (5, 4249861), (7, 3035615), (11, 1931755), (35, 607123), (55, 386351), (77, 275965), (97, 219065), (385, 55193), (485, 43813), (569, 37345), (679, 31295), (1067, 19915), (2845, 7469), (3395, 6259), (3983, 5335)]