131440515

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{307}}^1$

素因数の和:428

約数の個数: 64

約数和(自身を含む): 236307456

約数和(自身を除く): 104866941

約数列:

[1, 3, 5, 15, 17, 23, 51, 69, 73, 85, 115, 219, 255, 307, 345, 365, 391, 921, 1095, 1173, 1241, 1535, 1679, 1955, 3723, 4605, 5037, 5219, 5865, 6205, 7061, 8395, 15657, 18615, 21183, 22411, 25185, 26095, 28543, 35305, 67233, 78285, 85629, 105915, 112055, 120037, 142715, 336165, 360111, 380987, 428145, 515453, 600185, 1142961, 1546359, 1800555, 1904935, 2577265, 5714805, 7731795, 8762701, 26288103, 43813505, 131440515]

約数ペア:

[(1, 131440515), (3, 43813505), (5, 26288103), (15, 8762701), (17, 7731795), (23, 5714805), (51, 2577265), (69, 1904935), (73, 1800555), (85, 1546359), (115, 1142961), (219, 600185), (255, 515453), (307, 428145), (345, 380987), (365, 360111), (391, 336165), (921, 142715), (1095, 120037), (1173, 112055), (1241, 105915), (1535, 85629), (1679, 78285), (1955, 67233), (3723, 35305), (4605, 28543), (5037, 26095), (5219, 25185), (5865, 22411), (6205, 21183), (7061, 18615), (8395, 15657)]