278317039

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{8969}}^1$

素因数の和:9031

約数の個数: 32

約数和(自身を含む): 385781760

約数和(自身を除く): 107464721

約数列:

[1, 7, 11, 13, 31, 77, 91, 143, 217, 341, 403, 1001, 2387, 2821, 4433, 8969, 31031, 62783, 98659, 116597, 278039, 690613, 816179, 1282567, 1946273, 3058429, 3614507, 8977969, 21409003, 25301549, 39759577, 278317039]

約数ペア:

[(1, 278317039), (7, 39759577), (11, 25301549), (13, 21409003), (31, 8977969), (77, 3614507), (91, 3058429), (143, 1946273), (217, 1282567), (341, 816179), (403, 690613), (1001, 278039), (2387, 116597), (2821, 98659), (4433, 62783), (8969, 31031)]