5191400

素因数分解:

$2^3\times 5^2\times {\mathrm{101}}^1\times {\mathrm{257}}^1$

素因数の和:374

約数の個数: 48

約数和(自身を含む): 12236940

約数和(自身を除く): 7045540

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 101, 200, 202, 257, 404, 505, 514, 808, 1010, 1028, 1285, 2020, 2056, 2525, 2570, 4040, 5050, 5140, 6425, 10100, 10280, 12850, 20200, 25700, 25957, 51400, 51914, 103828, 129785, 207656, 259570, 519140, 648925, 1038280, 1297850, 2595700, 5191400]

約数ペア:

[(1, 5191400), (2, 2595700), (4, 1297850), (5, 1038280), (8, 648925), (10, 519140), (20, 259570), (25, 207656), (40, 129785), (50, 103828), (100, 51914), (101, 51400), (200, 25957), (202, 25700), (257, 20200), (404, 12850), (505, 10280), (514, 10100), (808, 6425), (1010, 5140), (1028, 5050), (1285, 4040), (2020, 2570), (2056, 2525)]