201521187

素因数分解:

$3^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{127}}^1\times {\mathrm{283}}^1$

素因数の和:512

約数の個数: 48

約数和(自身を含む): 340254720

約数和(自身を除く): 138733533

約数列:

[1, 3, 7, 9, 21, 63, 89, 127, 267, 283, 381, 623, 801, 849, 889, 1143, 1869, 1981, 2547, 2667, 5607, 5943, 8001, 11303, 17829, 25187, 33909, 35941, 75561, 79121, 101727, 107823, 176309, 226683, 237363, 251587, 323469, 528927, 712089, 754761, 1586781, 2264283, 3198749, 9596247, 22391243, 28788741, 67173729, 201521187]

約数ペア:

[(1, 201521187), (3, 67173729), (7, 28788741), (9, 22391243), (21, 9596247), (63, 3198749), (89, 2264283), (127, 1586781), (267, 754761), (283, 712089), (381, 528927), (623, 323469), (801, 251587), (849, 237363), (889, 226683), (1143, 176309), (1869, 107823), (1981, 101727), (2547, 79121), (2667, 75561), (5607, 35941), (5943, 33909), (8001, 25187), (11303, 17829)]