1279779950

素因数分解:

$2^1\times 5^2\times {\mathrm{89}}^1\times {\mathrm{139}}^1\times {\mathrm{2069}}^1$

素因数の和:2309

約数の個数: 48

約数和(自身を含む): 2425626000

約数和(自身を除く): 1145846050

約数列:

[1, 2, 5, 10, 25, 50, 89, 139, 178, 278, 445, 695, 890, 1390, 2069, 2225, 3475, 4138, 4450, 6950, 10345, 12371, 20690, 24742, 51725, 61855, 103450, 123710, 184141, 287591, 309275, 368282, 575182, 618550, 920705, 1437955, 1841410, 2875910, 4603525, 7189775, 9207050, 14379550, 25595599, 51191198, 127977995, 255955990, 639889975, 1279779950]

約数ペア:

[(1, 1279779950), (2, 639889975), (5, 255955990), (10, 127977995), (25, 51191198), (50, 25595599), (89, 14379550), (139, 9207050), (178, 7189775), (278, 4603525), (445, 2875910), (695, 1841410), (890, 1437955), (1390, 920705), (2069, 618550), (2225, 575182), (3475, 368282), (4138, 309275), (4450, 287591), (6950, 184141), (10345, 123710), (12371, 103450), (20690, 61855), (24742, 51725)]