164865200

素因数分解:

$2^4\times 5^2\times {\mathrm{641}}^1\times {\mathrm{643}}^1$

素因数の和:1302

約数の個数: 60

約数和(自身を含む): 397323528

約数和(自身を除く): 232458328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 641, 643, 1282, 1286, 2564, 2572, 3205, 3215, 5128, 5144, 6410, 6430, 10256, 10288, 12820, 12860, 16025, 16075, 25640, 25720, 32050, 32150, 51280, 51440, 64100, 64300, 128200, 128600, 256400, 257200, 412163, 824326, 1648652, 2060815, 3297304, 4121630, 6594608, 8243260, 10304075, 16486520, 20608150, 32973040, 41216300, 82432600, 164865200]

約数ペア:

[(1, 164865200), (2, 82432600), (4, 41216300), (5, 32973040), (8, 20608150), (10, 16486520), (16, 10304075), (20, 8243260), (25, 6594608), (40, 4121630), (50, 3297304), (80, 2060815), (100, 1648652), (200, 824326), (400, 412163), (641, 257200), (643, 256400), (1282, 128600), (1286, 128200), (2564, 64300), (2572, 64100), (3205, 51440), (3215, 51280), (5128, 32150), (5144, 32050), (6410, 25720), (6430, 25640), (10256, 16075), (10288, 16025), (12820, 12860)]