51253720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1123}}^1$

素因数の和:1304

約数の個数: 64

約数和(自身を含む): 132721920

約数和(自身を除く): 81468200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 163, 280, 326, 652, 815, 1123, 1141, 1304, 1630, 2246, 2282, 3260, 4492, 4564, 5615, 5705, 6520, 7861, 8984, 9128, 11230, 11410, 15722, 22460, 22820, 31444, 39305, 44920, 45640, 62888, 78610, 157220, 183049, 314440, 366098, 732196, 915245, 1281343, 1464392, 1830490, 2562686, 3660980, 5125372, 6406715, 7321960, 10250744, 12813430, 25626860, 51253720]

約数ペア:

[(1, 51253720), (2, 25626860), (4, 12813430), (5, 10250744), (7, 7321960), (8, 6406715), (10, 5125372), (14, 3660980), (20, 2562686), (28, 1830490), (35, 1464392), (40, 1281343), (56, 915245), (70, 732196), (140, 366098), (163, 314440), (280, 183049), (326, 157220), (652, 78610), (815, 62888), (1123, 45640), (1141, 44920), (1304, 39305), (1630, 31444), (2246, 22820), (2282, 22460), (3260, 15722), (4492, 11410), (4564, 11230), (5615, 9128), (5705, 8984), (6520, 7861)]