251721240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{431}}^1$

素因数の和:633

約数の個数: 128

約数和(自身を含む): 786309120

約数和(自身を除く): 534587880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 93, 120, 124, 155, 157, 186, 248, 310, 314, 372, 431, 465, 471, 620, 628, 744, 785, 862, 930, 942, 1240, 1256, 1293, 1570, 1724, 1860, 1884, 2155, 2355, 2586, 3140, 3448, 3720, 3768, 4310, 4710, 4867, 5172, 6280, 6465, 8620, 9420, 9734, 10344, 12930, 13361, 14601, 17240, 18840, 19468, 24335, 25860, 26722, 29202, 38936, 40083, 48670, 51720, 53444, 58404, 66805, 67667, 73005, 80166, 97340, 106888, 116808, 133610, 135334, 146010, 160332, 194680, 200415, 203001, 267220, 270668, 292020, 320664, 338335, 400830, 406002, 534440, 541336, 584040, 676670, 801660, 812004, 1015005, 1353340, 1603320, 1624008, 2030010, 2097677, 2706680, 4060020, 4195354, 6293031, 8120040, 8390708, 10488385, 12586062, 16781416, 20976770, 25172124, 31465155, 41953540, 50344248, 62930310, 83907080, 125860620, 251721240]

約数ペア:

[(1, 251721240), (2, 125860620), (3, 83907080), (4, 62930310), (5, 50344248), (6, 41953540), (8, 31465155), (10, 25172124), (12, 20976770), (15, 16781416), (20, 12586062), (24, 10488385), (30, 8390708), (31, 8120040), (40, 6293031), (60, 4195354), (62, 4060020), (93, 2706680), (120, 2097677), (124, 2030010), (155, 1624008), (157, 1603320), (186, 1353340), (248, 1015005), (310, 812004), (314, 801660), (372, 676670), (431, 584040), (465, 541336), (471, 534440), (620, 406002), (628, 400830), (744, 338335), (785, 320664), (862, 292020), (930, 270668), (942, 267220), (1240, 203001), (1256, 200415), (1293, 194680), (1570, 160332), (1724, 146010), (1860, 135334), (1884, 133610), (2155, 116808), (2355, 106888), (2586, 97340), (3140, 80166), (3448, 73005), (3720, 67667), (3768, 66805), (4310, 58404), (4710, 53444), (4867, 51720), (5172, 48670), (6280, 40083), (6465, 38936), (8620, 29202), (9420, 26722), (9734, 25860), (10344, 24335), (12930, 19468), (13361, 18840), (14601, 17240)]