251155820

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{257}}^1\times {\mathrm{373}}^1$

素因数の和:770

約数の個数: 48

約数和(自身を含む): 534951648

約数和(自身を除く): 283795828

約数列:

[1, 2, 4, 5, 10, 20, 131, 257, 262, 373, 514, 524, 655, 746, 1028, 1285, 1310, 1492, 1865, 2570, 2620, 3730, 5140, 7460, 33667, 48863, 67334, 95861, 97726, 134668, 168335, 191722, 195452, 244315, 336670, 383444, 479305, 488630, 673340, 958610, 977260, 1917220, 12557791, 25115582, 50231164, 62788955, 125577910, 251155820]

約数ペア:

[(1, 251155820), (2, 125577910), (4, 62788955), (5, 50231164), (10, 25115582), (20, 12557791), (131, 1917220), (257, 977260), (262, 958610), (373, 673340), (514, 488630), (524, 479305), (655, 383444), (746, 336670), (1028, 244315), (1285, 195452), (1310, 191722), (1492, 168335), (1865, 134668), (2570, 97726), (2620, 95861), (3730, 67334), (5140, 48863), (7460, 33667)]