280478991

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1$

素因数の和:304

約数の個数: 48

約数和(自身を含む): 422053632

約数和(自身を除く): 141574641

約数列:

[1, 3, 13, 39, 41, 103, 123, 131, 169, 309, 393, 507, 533, 1339, 1599, 1703, 4017, 4223, 5109, 5371, 6929, 12669, 13493, 16113, 17407, 20787, 22139, 40479, 52221, 54899, 66417, 69823, 164697, 175409, 209469, 526227, 553213, 713687, 907699, 1659639, 2141061, 2280317, 2723097, 6840951, 7191769, 21575307, 93492997, 280478991]

約数ペア:

[(1, 280478991), (3, 93492997), (13, 21575307), (39, 7191769), (41, 6840951), (103, 2723097), (123, 2280317), (131, 2141061), (169, 1659639), (309, 907699), (393, 713687), (507, 553213), (533, 526227), (1339, 209469), (1599, 175409), (1703, 164697), (4017, 69823), (4223, 66417), (5109, 54899), (5371, 52221), (6929, 40479), (12669, 22139), (13493, 20787), (16113, 17407)]