157788140

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{1621}}^1$

素因数の和:1818

約数の個数: 48

約数和(自身を含む): 344434944

約数和(自身を除く): 186646804

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 157, 310, 314, 620, 628, 785, 1570, 1621, 3140, 3242, 4867, 6484, 8105, 9734, 16210, 19468, 24335, 32420, 48670, 50251, 97340, 100502, 201004, 251255, 254497, 502510, 508994, 1005020, 1017988, 1272485, 2544970, 5089940, 7889407, 15778814, 31557628, 39447035, 78894070, 157788140]

約数ペア:

[(1, 157788140), (2, 78894070), (4, 39447035), (5, 31557628), (10, 15778814), (20, 7889407), (31, 5089940), (62, 2544970), (124, 1272485), (155, 1017988), (157, 1005020), (310, 508994), (314, 502510), (620, 254497), (628, 251255), (785, 201004), (1570, 100502), (1621, 97340), (3140, 50251), (3242, 48670), (4867, 32420), (6484, 24335), (8105, 19468), (9734, 16210)]