1999281175

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{83}}^1\times {\mathrm{157}}^1$

素因数の和:305

約数の個数: 72

約数和(自身を含む): 2821600656

約数和(自身を除く): 822319481

約数列:

[1, 5, 17, 19, 25, 83, 85, 95, 157, 323, 361, 415, 425, 475, 785, 1411, 1577, 1615, 1805, 2075, 2669, 2983, 3925, 6137, 7055, 7885, 8075, 9025, 13031, 13345, 14915, 26809, 29963, 30685, 35275, 39425, 50711, 56677, 65155, 66725, 74575, 134045, 149815, 153425, 221527, 247589, 253555, 283385, 325775, 509371, 670225, 749075, 963509, 1107635, 1237945, 1267775, 1416925, 2546855, 4209013, 4704191, 4817545, 5538175, 6189725, 12734275, 21045065, 23520955, 24087725, 79971247, 105225325, 117604775, 399856235, 1999281175]

約数ペア:

[(1, 1999281175), (5, 399856235), (17, 117604775), (19, 105225325), (25, 79971247), (83, 24087725), (85, 23520955), (95, 21045065), (157, 12734275), (323, 6189725), (361, 5538175), (415, 4817545), (425, 4704191), (475, 4209013), (785, 2546855), (1411, 1416925), (1577, 1267775), (1615, 1237945), (1805, 1107635), (2075, 963509), (2669, 749075), (2983, 670225), (3925, 509371), (6137, 325775), (7055, 283385), (7885, 253555), (8075, 247589), (9025, 221527), (13031, 153425), (13345, 149815), (14915, 134045), (26809, 74575), (29963, 66725), (30685, 65155), (35275, 56677), (39425, 50711)]