128902280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{247889}}^1$

素因数の和:247913

約数の個数: 32

約数和(自身を含む): 312341400

約数和(自身を除く): 183439120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 247889, 495778, 991556, 1239445, 1983112, 2478890, 3222557, 4957780, 6445114, 9915560, 12890228, 16112785, 25780456, 32225570, 64451140, 128902280]

約数ペア:

[(1, 128902280), (2, 64451140), (4, 32225570), (5, 25780456), (8, 16112785), (10, 12890228), (13, 9915560), (20, 6445114), (26, 4957780), (40, 3222557), (52, 2478890), (65, 1983112), (104, 1239445), (130, 991556), (260, 495778), (520, 247889)]