1221400

素因数分解:

$2^3\times 5^2\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 2946240

約数和(自身を除く): 1724840

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 155, 197, 200, 248, 310, 394, 620, 775, 788, 985, 1240, 1550, 1576, 1970, 3100, 3940, 4925, 6107, 6200, 7880, 9850, 12214, 19700, 24428, 30535, 39400, 48856, 61070, 122140, 152675, 244280, 305350, 610700, 1221400]

約数ペア:

[(1, 1221400), (2, 610700), (4, 305350), (5, 244280), (8, 152675), (10, 122140), (20, 61070), (25, 48856), (31, 39400), (40, 30535), (50, 24428), (62, 19700), (100, 12214), (124, 9850), (155, 7880), (197, 6200), (200, 6107), (248, 4925), (310, 3940), (394, 3100), (620, 1970), (775, 1576), (788, 1550), (985, 1240)]