16200400

素因数分解:

$2^4\times 5^2\times {\mathrm{101}}^1\times {\mathrm{401}}^1$

素因数の和:520

約数の個数: 60

約数和(自身を含む): 39404844

約数和(自身を除く): 23204444

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 101, 200, 202, 400, 401, 404, 505, 802, 808, 1010, 1604, 1616, 2005, 2020, 2525, 3208, 4010, 4040, 5050, 6416, 8020, 8080, 10025, 10100, 16040, 20050, 20200, 32080, 40100, 40400, 40501, 80200, 81002, 160400, 162004, 202505, 324008, 405010, 648016, 810020, 1012525, 1620040, 2025050, 3240080, 4050100, 8100200, 16200400]

約数ペア:

[(1, 16200400), (2, 8100200), (4, 4050100), (5, 3240080), (8, 2025050), (10, 1620040), (16, 1012525), (20, 810020), (25, 648016), (40, 405010), (50, 324008), (80, 202505), (100, 162004), (101, 160400), (200, 81002), (202, 80200), (400, 40501), (401, 40400), (404, 40100), (505, 32080), (802, 20200), (808, 20050), (1010, 16040), (1604, 10100), (1616, 10025), (2005, 8080), (2020, 8020), (2525, 6416), (3208, 5050), (4010, 4040)]