21575307

素因数分解:

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

素因数の和:291

約数の個数: 32

約数和(自身を含む): 32288256

約数和(自身を除く): 10712949

約数列:

[1, 3, 13, 39, 41, 103, 123, 131, 309, 393, 533, 1339, 1599, 1703, 4017, 4223, 5109, 5371, 12669, 13493, 16113, 40479, 54899, 69823, 164697, 175409, 209469, 526227, 553213, 1659639, 7191769, 21575307]

約数ペア:

[(1, 21575307), (3, 7191769), (13, 1659639), (39, 553213), (41, 526227), (103, 209469), (123, 175409), (131, 164697), (309, 69823), (393, 54899), (533, 40479), (1339, 16113), (1599, 13493), (1703, 12669), (4017, 5371), (4223, 5109)]